Difference between pages "Pressure sensitive adhesives in packaging" and "Wind Energy"

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=Technology Overview=
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This report presents a brief introduction to wind energy and technologies available for horizontal wind turbines. A detailed taxonomy for horizontal axis wind turbines is presented covering parts of the turbine, control systems, applications among others. A detailed landscape analysis of patent and non-patent literature is done with a focus on Doubly-fed Induction Generators (DFIG) used in the horizontal axis wind turbines for efficient power generation. The product information of major players in the market is also captured for Doubly-fed Induction Generators. The final section of the report covers the existing and future market predictions for wind energy-based power generation.
 +
[[Image:Wind_Flowchart.PNG|right|580px|thumb|Process Flow]]
  
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Pressure sensitive adhesive (PSA, self adhesive, self stick adhesive) is adhesive that forms a bond when pressure is applied to marry the adhesive with the adherend. No solvent, water, or heat is needed to activate the adhesive. It is used in pressure sensitive tapes, labels, note pads, automobile trim, and a wide variety of other products.
+
<br>
 +
=Introduction=
 +
* We have been using wind power at least since 5000 BC to propel sailboats and sailing ships, and architects have used wind-driven natural ventilation in buildings since similarly ancient times. The use of wind to provide mechanical power came later.
 +
* Harnessing renewable alternative energy is the ideal way to tackle the energy crisis, with due consideration given to environmental pollution, that looms large over the world.
  
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As the name "pressure sensitive" indicates, the degree of bond is influenced by the amount of pressure which is used to apply the adhesive to the surface.
+
* Renewable energy is also called "clean energy" or "green power" because it doesn’t pollute the air or the water. Wind energy is one such renewable energy source that harnesses natural wind power.<br>
 +
== Read More? ==
 +
Click on '''[[Wind Energy Background]]''' to read more about wind energy.
  
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Surface factors such as smoothness, surface energy, removal of contaminants, etc. are also important to proper bonding.
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In order to overcome the problems associated with fixed speed wind turbine system and to maximize the wind energy capture, many new wind farms are employing variable speed wind energy conversion systems (WECS) with doubly-fed induction generator (DFIG). It is the most popular and widely used scheme for the wind generators due to its advantages.
  
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PSAs are usually designed to form a bond and hold properly at room temperatures. PSAs typically reduce or lose their tack at cold temperatures and reduce their shear holding ability at high temperatures: Specialty adhesives are made to function at high or low temperatures. It is important to choose an adhesive formulation which is designed for its intended use conditions.
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For variable-speed systems with limited variable-speed range, e.g. ±30% of synchronous speed, the doubly-fed induction generator(DFIG) can be an interesting solution. This is mainly due to the fact that the power electronic converter only has to handle a fraction (20-30%) of the total power as the converters are connected to the rotor and not to the stator. Therefore, the losses in the power electronic converter can be reduced, compared to a system where the converter has to handle the total power. The overall structure of wind power generation through DFIG as shown in the figure below.
  
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=Applications of PSAs=
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=Market Research=
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Pressure sensitive adhesives are designed for either permanent or removable applications. Examples of permanent applications include safety labels for power equipment, foil tape for HVAC duct work, automotive interior trim assembly, and sound/vibration damping films. Some high performance permanent PSAs exhibit high adhesion values and can support kilograms of weight per square centimeter of contact area, even at elevated temperature. Permanent PSAs may be initially removable (for example to recover mislabeled goods) and build adhesion to a permanent bond after several hours or days.
+
==The History of Wind Energy==
  
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Removable adhesives are designed to form a temporary bond, and ideally can be removed after months or years without leaving residue on the adherend. Removable adhesives are used in applications such as surface protection films, masking tapes, bookmark and note papers, price marking labels, promotional graphics materials, and for skin contact (wound care dressings, EKG electrodes, athletic tape, analgesic and transdermal drug patches, etc.). Some removable adhesives are designed to repeatedly stick and unstick. They have low adhesion and generally can not support much weight.
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To read about '''the History of Wind Energy''', '''[http://dolcera.com/wiki/index.php?title=The_History_of_Wind_Energy click here]'''
  
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==Food Industry==
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==Global Wind Energy Market==
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For the food packaging it is of high importance that none of the ingredients in an adhesive do not influence the quality of the food in an undesired way. Usually, the label is not directly applied to the food but on the package. Thus the packaging such as a plastic film is a barrier between the label and the food. This means that the adhesive - which is the sticky side of a label - is not in direct food contact. However, plastic films used for the food packaging can be very thin. The material is thin; such that depending on the chemical nature of an additive, migration through the film can occur (see picture). These products need to fully meet indirect food contact regulations to be certain that the quality of the food is not influenced in case an additive migrates through the film.<br />
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===Market Overview===
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[[Image:norm_full_psa.jpg|center|thumb|300px|[http://adhesives-sealants.evonik.com/product/adhesives-sealants/en/markets/packaging/pressure-sensitive-adhesives/pages/default.aspx PSA label for food packaging]]]
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* In the year 2010, the wind capacity reached worldwide '''196’630 Megawatt''', after '''159’050 MW''' in 2009, '''120’903 MW''' in 2008, and '''93’930 MW''' in 2007.
 +
[[Image:World_Installed1.PNG|center|600px|thumb|Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]]]
 +
* Wind power showed a growth rate of '''23.6 %''', the lowest growth since 2004 and the second lowest growth of the past decade.
 +
* For the first time in more than two decades, the market for new wind turbines was smaller than in the previous year and reached an overall size of '''37’642 MW''', after 38'312 MW in 2009.
 +
[[Image:New.PNG|center|600px|thumb|Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]]]
 +
* All wind turbines installed by the end of 2010 worldwide can generate '''430 Tera watt hours per annum''', more than the total electricity demand of the United Kingdom, the sixth largest economy of the world, and equaling 2.5 % of the global electricity consumption.
 +
* In the year 2010, altogether '''83 countries''', one more than in 2009, used wind energy for electricity generation. 52 countries increased their total installed capacity, after 49 in the previous year.
 +
* The turnover of the wind sector worldwide reached '''40 billion Euros (55 billion US$) in 2010''', after 50 billion Euros (70 billion US$) in the year 2009. The decrease is due to lower prices for wind turbines and a shift towards China.
 +
* China became number one in total installed capacity and the center of the international wind industry, and added '''18’928 Megawatt''' within one year, accounting for more than 50 % of the world market for new wind turbines.
 +
* The wind sector in 2010 employed '''670’000 persons''' worldwide.
 +
* Nuclear disaster in Japan and oil spill in Gulf of Mexico will have long-term impact on the prospects of wind energy. Governments need to urgently reinforce their wind energy policies.
 +
* WWEA sees a global capacity of '''600’000 Megawatt''' as possible by the year 2015 and more than '''1’500’000 Megawatt''' by the year 2020.
  
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Pressure-sensitive adhesives may be safely used as the food-contact surface of labels and/or tapes applied to food, in accordance with the FDA [http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=175.125 CFR - Code of Federal Regulations Title 21]
+
Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]
  
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==Other Industries==
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===Global Market Forecast===
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Other than food industry PSAs are widely used in
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* Global Wind Energy Outlook 2010, provides forecast under  [http://dolcera.com/wiki/index.php?title=Forecast_Scenarios three different scenarios] - Reference, Moderate and Advanced.
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* Aerospace Industry
+
* The Global Cumulative Wind Power Capacity is estimated to reach 572,733 MW by the year 2030, under the Reference Scenario
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* Automobile Industry
+
* The Global Cumulative Wind Power Capacity is estimated to reach 1,777,550 MW by the year 2030, under the Moderate Scenario
−
* Electronics and Electrical Industry
+
* The Global Cumulative Wind Power Capacity is estimated to reach 2,341,984 MW by the year 2030, under the Advanced Scenario
−
* Medical Applications
+
* The following chart shows the Global Cumulative Wind Power Capacity Forecast,under the different scenarios:
  
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==[[Making of PSA]]==
+
[[Image:Global_Forecast.PNG|center|618*363px|thumb|Global Cumulative Wind Power Capacity Forecast, Source: [http://www.gwec.net/fileadmin/documents/Publications/GWEO%202010%20final.pdf Global Wind Energy Outlook 2010]]]
  
  
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==PSA products==
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Source: [http://www.gwec.net/fileadmin/documents/Publications/GWEO%202010%20final.pdf Global Wind Energy Outlook 2010]
  
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The most common products that utilize PSAs are tapes, labels, and protective films. The PSA sector is among the fastest growing in the adhesive market, making the search for new pressure-sensitive products (PSP) and applications highly competitive.
+
===Market Growth Rates===
 +
* The growth rate is the relation between the new installed wind power capacity and the installed capacity of the previous year.
 +
* With '''23.6 %''', the year 2010 showed the second lowest growth rate of the last decade.
  
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* '''PSA tapes:''' Self-adhesive materials usually produced by coating an adhesive onto a carrier and used as a continuous web.
+
[[Image:World_Market_Growth Rates.PNG|center|600px|thumb|World Market Growth Rates, Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]]]
  
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* '''PSA labels:''' Self-adhesive laminated carrier materials. The self-adhesive layer is protected with a supplemental material (release liner).
+
* Before 2010, the annual growth rate had continued to increase since the year 2004, '''peaking in 2009 at 31.7%''', the highest rate since 2001.
 +
* The highest growth rates of the year 2010 by country can be found in '''Romania''', which increased its capacity by 40 times.
 +
* The second country with a growth rate of more than 100 % was '''Bulgaria (112%)'''.
 +
* In the year 2009, four major wind markets had more than doubled their wind capacity: '''China, Mexico, Turkey, and Morocco'''.
 +
* Next to China, strong growth could be found mainly in '''Eastern European and South Eastern European''' countries: Romania, Bulgaria, Turkey, Lithuania, Poland, Hungary, Croatia and Cyprus, and Belgium.
 +
* Africa (with the exception of Egypt and Morocco) and Latin America (with the exception of Brazil), are again lagging behind the rest of the world in the commercial use of wind power.
 +
* The Top 10 countries by Growth Rate are shown in the figure listed below (only markets bigger than 200 MW have been considered):
  
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* '''Protective films:''' Carrier material possesses built-in or built-on self-adhesive properties.
+
[[Image:Top_Growth_Countries.PNG|center|600px|thumb|Top Countries by Market Growth Rates, Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]]]
  
−
=Pressure Sensitive Adhesive Products in Food Industry=
+
==Geographical Market Distribution==
 +
* China became number one in total installed capacity and the center of the international wind industry, and added '''18'928 Megawatt''' within one year, accounting for more than 50 % of the world market for new wind turbines.
 +
* Major decrease in new installations can be observed in North America and the '''USA lost its number one position''' in total capacity to China.
 +
* Many Western European countries are showing stagnation, whereas there is strong growth in a number of Eastern European countries.
 +
* '''Germany''' keeps its number one position in Europe with '''27'215 Megawatt''', followed by Spain with 20'676 Megawatt.
 +
* The highest shares of wind power can be found in three European countries: '''Denmark (21.0%), Portugal (18.0 %) and Spain (16.0%)'''.
 +
* '''Asia''' accounted for the largest share of new installations '''(54.6%)''', followed by '''Europe (27.0%)''' and '''North America (16.7 %)'''.
 +
* '''Latin America (1.2%)''' and '''Africa (0.4%)''' still played only a marginal role in new installations.
 +
* Africa: North Africa represents still lion share of installed capacity, wind energy plays hardly a role yet in Sub-Sahara Africa.
 +
* Nuclear disaster in Japan and oil spill in Gulf of Mexico will have long-term impact on the prospects of wind energy. Governments need to urgently reinforce their wind energy policies.
 +
 
 +
Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]
 +
 
 +
The regional breakdowns for the period 2009-2030 has been provided for the following three scenarios:
 +
;# [[Regional Breakdown: Reference scenario (GWEO 2010)]]
 +
;# [[Regional Breakdown: Moderate scenario (GWEO 2010)]]
 +
;# [[Regional Breakdown: Advanced scenario (GWEO 2010)]]
 +
 
 +
''Note: To know more about the '''Forecast Scenarios''' [http://dolcera.com/wiki/index.php?title=Forecast_Scenarios click here]''
 +
 
 +
==Country-wise Market Distribution==
 +
 
 +
* In 2010, the Chinese wind market represented more than half of the world market for new wind turbines adding '''18.9 GW''', which equals a market share of '''50.3%'''.
 +
* A sharp decrease in new capacity happened in the USA whose share in new wind turbines fell down to '''14.9% (5.6 GW)''', after 25.9% or 9.9 GW in
 +
the year 2009.
 +
* '''Nine further countries''' could be seen as major markets, with turbine sales in a range '''between 0.5 and 1.5 GW''': Germany, Spain, India, United
 +
Kingdom, France, Italy, Canada, Sweden and the Eastern European newcomer Romania.
 +
* Further, '''12 markets''' for new turbines had a medium size '''between 100 and 500 MW''': Turkey, Poland, Portugal, Belgium, Brazil, Denmark, Japan, Bulgaria, Greece, Egypt, Ireland, and Mexico.
 +
* By end of 2010, '''20 countries''' had installations of '''more than 1 000 MW''', compared with 17 countries by end of 2009 and 11 countries byend of 2005.
 +
* Worldwide, '''39 countries''' had wind farms with '''a capacity of 100 Megawatt''' or more installed, compared with 35 countries one year ago, and 24 countries five years ago.
 +
* The top five countries (USA, China, Germany, Spain and India) represented '''74.2%''' of the worldwide wind capacity, significantly more than 72.9 % in the year.
 +
* The '''USA and China''' together represented '''43.2%''' of the global wind capacity (up from 38.4 % in 2009).
 +
* The newcomer on the list of countries using wind power commercially is a Mediterranean country, '''Cyprus''', which for the first time installed a larger grid-connected wind farm, with 82 MW.
 +
 
 +
Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]
 +
 
 +
The top 10 countries by Total Installed Capacity for the year 2010, is illustrated in the chart below:
 +
[[Image:Top_Installed_Countries.PNG|center|600px|thumb|Top Countries by Market Growth Rates, Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]]]
 +
 
 +
To view the Top 10 countries by different other parameters for the year 2010, click on the links below:
 +
;# [[Top 10 countries by Total New Installed Capacity]]
 +
;# [[Top 10 countries by Capacity per Capita (kW/cap)]]
 +
;# [[Top 10 countries by Capacity per Land Area (kW/sq. km)]]
 +
;# [[Top 10 countries by Capacity per GDP (kW/ million USD)]]
 +
 
 +
To view the '''[[Country-wise Installed Wind Power Capacity]]''' (MW) 2002-2010 (Source: World Wind Energy Association), '''[http://dolcera.com/wiki/index.php?title=Country-wise_Installed_Wind_Power_Capacity click here]'''
 +
 
 +
==Country Profiles==
 +
===China===
 +
<br>'''Wind Energy Outlook for China - 2011 & Beyond'''
 +
<br>Despite its rapid and seemingly unhampered expansion, the
 +
Chinese wind power sector continues to face significant
 +
challenges, including issues surrounding grid access and
 +
integration, reliability of turbines and a coherent strategy for
 +
developing China’s offshore wind resource. These issues will
 +
be prominent during discussions around the twelfth Five-Year
 +
Plan, which will be passed in March 2011. According to the
 +
draft plan, this is expected to reflect the Chinese
 +
government’s continuous and reinforced commitment to
 +
wind power development, with national wind energy targets
 +
of 90 GW for 2015 and 200 GW for 2020.
 +
 
 +
For a detailed country profile of China please visit this [[China Wind Energy Profile Link]]
 +
 
 +
===India===
 +
<br>'''Wind Energy Main market developments in 2010'''
 +
<br>Today the Indian market is emerging as one of the major
 +
manufacturing hubs for wind turbines in Asia. Currently,
 +
seventeen manufacturers have an annual production capacity
 +
of 7,500 MW. According to the WISE, the annual wind turbine
 +
manufacturing capacity in India is likely to exceed
 +
17,000 MW by 2013.
 +
<br>The Indian market is expanding with the leading wind
 +
companies like Suzlon, Vestas, Enercon, RRB Energy and GE
 +
now being joined by new entrants like Gamesa, Siemens, and
 +
WinWinD, all vying for a greater market share. Suzlon, however,
 +
is still the market leader with a market share of over 50%.
 +
<br>The Indian wind industry has not been significantly affected
 +
by the financial and economic crises. Even in the face of a
 +
global slowdown, the Indian annual wind power market has
 +
grown by almost 68%. However, it needs to be pointed out
 +
that the strong growth in 2010 might have been stimulated
 +
by developers taking advantage of the accelerated
 +
depreciation before this option is phased out.
 +
 
 +
For a detailed country profile of India please visit this [[India Wind Energy Profile Link]]
 +
 
 +
==Market Share Analysis==
 +
===Global Market Share===
 +
* Vestas leads the Global Market in the 2010 with a 12% market share according to Make Consulting, while BTM Consulting reports it to have a 14.8% market share.
 +
* According to Make Consulting, the global market share of Vestas has decreased from 19% in 2008, to 14.5% in 2009, to 12% in 2010.
 +
* According to BTM Consulting, the global market share of Vestas has changed from 19% in 2008, to 12% in 2009, to 14.8% in 2010.
 +
* According to Make Consulting, the global market share of GE Energy has decreased from 18% in 2008, to 12.5% in 2009, to 10% in 2010.
 +
* The market share of world no. 2 Sinovel, has been constantly increasing, from 5% in 2008 , to 9.3% in 2009, to 11% in 2010
 +
* The top 5 companies have been occupying more than half of the Global Market Share from 2008 to 2010
 +
 
 +
Source: [http://www.make-consulting.com Make Consulting], [http://www.btmgcs.com/ BTM Global Consulting]
 +
 
 +
The chart given below illustrates the Global Market Share Comparison of Major Wind Energy Companies for the period 2008-2010, as provided by two different agencies, Make Consulting and BTM Consulting:
 +
[[Image:Market_Share_Comparison.JPG|center|1171*459px|thumb|Global Market Share Comparison of Major Companies for the period 2008-2010
 +
, Source: [http://www.make-consulting.com Make Consulting], [http://www.btmgcs.com/ BTM Global Consulting]]]
 +
 
 +
===Market Share - Top 10 Markets===
 +
* While Vestas is the Global Leader, it is the leader in only one of Top 10 markets, which is 10<sup>th</sup> placed Sweden
 +
* But, Vestas is ranked 2<sup>nd</sup> in 5 of Top 10 markets
 +
* Sinovel, ranked 2<sup>nd</sup> globally, features only once in the Top 3 Companies list in the Top 10 markets, but scores globally because it leads the largest market China
 +
* The table given below illustrates the Top 3 players in Top 10 Wind Energy Markets of the world:
 +
{|border="2" cellspacing="0" cellpadding="4" width="50%" align="center"
 +
|bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Market'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''MW'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''No. 1'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''No. 2'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''No. 3'''</font>
 +
|-
 +
|bgcolor = "#DBE5F1"|'''China'''
 +
|align = "center" bgcolor = "#DBE5F1"|18928
 +
|align = "center" bgcolor = "#DBE5F1"|Sinovel
 +
|align = "center" bgcolor = "#DBE5F1"|Goldwind
 +
|align = "center" bgcolor = "#DBE5F1"|Dongfang
 +
|-
 +
|bgcolor = "#DBE5F1"|'''USA'''
 +
|align = "center" bgcolor = "#DBE5F1"|5115
 +
|align = "center" bgcolor = "#DBE5F1"|GE Energy
 +
|align = "center" bgcolor = "#DBE5F1"|Vestas
 +
|align = "center" bgcolor = "#DBE5F1"|Siemens
 +
|-
 +
|bgcolor = "#DBE5F1"|'''India'''
 +
|align = "center" bgcolor = "#DBE5F1"|2139
 +
|align = "center" bgcolor = "#DBE5F1"|Suzlon
 +
|align = "center" bgcolor = "#DBE5F1"|Enercon
 +
|align = "center" bgcolor = "#DBE5F1"|Vestas
 +
|-
 +
|bgcolor = "#DBE5F1"|'''Germany'''
 +
|align = "center" bgcolor = "#DBE5F1"|1551
 +
|align = "center" bgcolor = "#DBE5F1"|Enercon
 +
|align = "center" bgcolor = "#DBE5F1"|Vestas
 +
|align = "center" bgcolor = "#DBE5F1"|Suzlon
 +
|-
 +
|bgcolor = "#DBE5F1"|'''UK'''
 +
|align = "center" bgcolor = "#DBE5F1"|1522
 +
|align = "center" bgcolor = "#DBE5F1"|Siemens
 +
|align = "center" bgcolor = "#DBE5F1"|Vestas
 +
|align = "center" bgcolor = "#DBE5F1"|Gamesa
 +
|-
 +
|bgcolor = "#DBE5F1"|'''Spain'''
 +
|align = "center" bgcolor = "#DBE5F1"|1516
 +
|align = "center" bgcolor = "#DBE5F1"|Gamesa
 +
|align = "center" bgcolor = "#DBE5F1"|Vestas
 +
|align = "center" bgcolor = "#DBE5F1"|GE Energy
 +
|-
 +
|bgcolor = "#DBE5F1"|'''France'''
 +
|align = "center" bgcolor = "#DBE5F1"|1186
 +
|align = "center" bgcolor = "#DBE5F1"|Enercon
 +
|align = "center" bgcolor = "#DBE5F1"|Suzlon
 +
|align = "center" bgcolor = "#DBE5F1"|Vestas
 +
|-
 +
|bgcolor = "#DBE5F1"|'''Italy'''
 +
|align = "center" bgcolor = "#DBE5F1"|948
 +
|align = "center" bgcolor = "#DBE5F1"|Gamesa
 +
|align = "center" bgcolor = "#DBE5F1"|Vestas
 +
|align = "center" bgcolor = "#DBE5F1"|Suzlon
 +
|-
 +
|bgcolor = "#DBE5F1"|'''Canada'''
 +
|align = "center" bgcolor = "#DBE5F1"|690
 +
|align = "center" bgcolor = "#DBE5F1"|Siemens
 +
|align = "center" bgcolor = "#DBE5F1"|GE Energy
 +
|align = "center" bgcolor = "#DBE5F1"|Enercon
 +
|-
 +
|bgcolor = "#DBE5F1"|'''Sweeden'''
 +
|align = "center" bgcolor = "#DBE5F1"|604
 +
|align = "center" bgcolor = "#DBE5F1"|Vestas
 +
|align = "center" bgcolor = "#DBE5F1"|Enercon
 +
|align = "center" bgcolor = "#DBE5F1"|Siemens
 +
|-
 +
|align = "center" bgcolor = "#DBE5F1" colspan = "5"|''Source: BTM Consult - part of Navigant Consulting - March 2011''
 +
|-
 +
|}<br clear="all">
 +
 
 +
Source: [http://www.btm.dk/reports/world+market+update+2010 BTM Consult]
 +
 
 +
==Company Profiles==
 +
 
 +
# '''[[Vestas Wind Systems A/S]]'''
 +
# '''[[Suzlon Energy]]'''
 +
 
 +
==Major Wind Turbine Suppliers==
 +
{|border="2" cellspacing="0" cellpadding="4" width="50%" align="center"
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Turbine maker'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Rotor blades'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Gear boxes'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Generators'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Towers'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Controllers'''</font>
 +
|-
 +
|bgcolor = "#DBE5F1"|Vestas
 +
|bgcolor = "#DBE5F1"|Vestas, LM
 +
|bgcolor = "#DBE5F1"|Bosch Rexroth, Hansen, Wingery, Moventas
 +
|bgcolor = "#DBE5F1"| Weier, Elin, ABB, LeroySomer
 +
|bgcolor = "#DBE5F1"| Vestas, NEG, DMI
 +
|bgcolor = "#DBE5F1"|Cotas (Vestas),<br>NEG (Dancontrol)
 +
|-
 +
|bgcolor = "#DBE5F1"|GE energy
 +
|bgcolor = "#DBE5F1"|LM, Tecsis
 +
|bgcolor = "#DBE5F1"|Wingery, Bosch, Rexroth, Eickhoff, GE
 +
|bgcolor = "#DBE5F1"|Loher, GE
 +
|bgcolor = "#DBE5F1"|DMI, Omnical, SIAG
 +
|bgcolor = "#DBE5F1"|GE
 +
|-
 +
|bgcolor = "#DBE5F1"|Gamesa
 +
|bgcolor = "#DBE5F1"|Gamesa, LM
 +
|bgcolor = "#DBE5F1"| Echesa (Gamesa), Winergy, Hansen
 +
|bgcolor = "#DBE5F1"|Indar (Gamesa), Cantarey
 +
|bgcolor = "#DBE5F1"|Gamesa
 +
|bgcolor = "#DBE5F1"| Ingelectric (Gamesa)
 +
|-
 +
|bgcolor = "#DBE5F1"|Enercon
 +
|bgcolor = "#DBE5F1"|Enercon
 +
|bgcolor = "#DBE5F1"|Direct drive
 +
|bgcolor = "#DBE5F1"|Enercon
 +
|bgcolor = "#DBE5F1"|KGW, SAM
 +
|bgcolor = "#DBE5F1"|Enercon
 +
|-
 +
|bgcolor = "#DBE5F1"| Siemens<br>wind
 +
|bgcolor = "#DBE5F1"|Siemens, LM
 +
|bgcolor = "#DBE5F1"|Winergy
 +
|bgcolor = "#DBE5F1"|ABB
 +
|bgcolor = "#DBE5F1"|Roug, KGW
 +
|bgcolor = "#DBE5F1"| Siemens, KK Electronic
 +
|-
 +
|bgcolor = "#DBE5F1"|Suzlon
 +
|bgcolor = "#DBE5F1"|Suzlon
 +
|bgcolor = "#DBE5F1"|Hansen, Winergy
 +
|bgcolor = "#DBE5F1"| Suzlon,<br>Siemens
 +
|bgcolor = "#DBE5F1"|Suzlon
 +
|bgcolor = "#DBE5F1"| Suzlon, Mita Teknik
 +
|-
 +
|bgcolor = "#DBE5F1"|Repower
 +
|bgcolor = "#DBE5F1"|LM
 +
|bgcolor = "#DBE5F1"| Winergy, Renk, Eickhoff
 +
|bgcolor = "#DBE5F1"|N/A
 +
|bgcolor = "#DBE5F1"|N/A
 +
|bgcolor = "#DBE5F1"| Mita Teknik, ReGuard
 +
|-
 +
|bgcolor = "#DBE5F1"|Nordex
 +
|bgcolor = "#DBE5F1"|Nordex
 +
|bgcolor = "#DBE5F1"| Winergy, Eickhoff, Maag
 +
|bgcolor = "#DBE5F1"|Loher
 +
|bgcolor = "#DBE5F1"| Nordex, Omnical
 +
|bgcolor = "#DBE5F1"| Nordex, Mita Teknik
 +
|-
 +
|align = "center" bgcolor = "#DBE5F1" colspan = "6"|''Source: BTM Consult''
 +
|-
 +
|}<br clear="all">
 +
 
 +
==Products of Top Companies==
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''S. No'''</font>
+
|align = "center" bgcolor = "#4F81BD" width=”42”|<font color="#FFFFFF">'''S.No.'''</font>
 
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Company'''</font>
 
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Company'''</font>
−
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Product Name'''</font>
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Product'''</font>
−
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Description'''</font>
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Specifications'''</font>
−
|-
+
|-valign="top"
 
|align = "center" bgcolor = "#DCE6F1"|1
 
|align = "center" bgcolor = "#DCE6F1"|1
−
|bgcolor = "#DCE6F1"|Sustainable Adhesive Products - Berkshire Labels Ltd
+
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v80-2.0-mw.aspx#/vestas-univers Vestas]</u></font>
−
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.sustainableadhesive.com/about.html BioTAK™ S100]</u></font>
+
|bgcolor = "#DCE6F1"|V80
−
|bgcolor = "#DCE6F1"|Berkshire Labels, pioneers of '''thegreenlabelcompany.co.uk''' currently coat our S100 Permanent PSA onto a range of label stock substrates used in a variety of food labeling  applications.
+
|bgcolor = "#DCE6F1"|'''Rated Power: '''2.0 MW,  '''Frequency:''' 50 Hz/60 Hz, '''Number of Poles:''' 4-pole, '''Operating Temperature: -'''30°C to 40°
−
|-
+
|- valign="top"
 
|align = "center"|2
 
|align = "center"|2
−
|<font color="#0000FF"><u>[http://www.exxonmobil.com/ Exxon Mobil Corporation]</u></font>
+
|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v80-2.0-mw.aspx#/vestas-univers Vestas]</u></font>
−
|<font color="#0000FF"><u>[http://www.exxonmobilchemical.com/Chem-English/yourindustry/opp-films-pressure-sensitive-labels-food-packaging.aspx Label-Lyte™]</u></font>
+
|V90
−
|Pressure-sensitive label facestocks for food packaging
+
|'''Rated Power:''' 1.8/2.0 MW, '''Frequency :''' 50 Hz/60 Hz, '''Number of Poles :''' 4-pole(50 Hz)/6-pole(60 Hz), '''Operating Temperature: -'''30°C to 40°
−
|-
+
|- valign="top"
 
|align = "center" bgcolor = "#DCE6F1"|3
 
|align = "center" bgcolor = "#DCE6F1"|3
−
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.ajadhesives.com/franklin.htm Franklin Adhesives & Polymer]</u></font>
+
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v80-2.0-mw.aspx#/vestas-univers Vestas]</u></font>
−
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.ajadhesives.com/franklin.htm Pressure Sensitive Adhesives]</u></font>
+
|bgcolor = "#DCE6F1"|V90 Offshore
−
|bgcolor = "#DCE6F1"|Pressure sensitive adhesives for labels, tapes, films and office products marketed under the brand names of Covinax, Micronax and Acrynax. Adhesives offer various combinations of peel, tack and shear strength for specific applications – from packaging frozen foods to labels that can withstand the heat under the car hood.
+
|bgcolor = "#DCE6F1"|'''Rated Power:''' 3.0 MW, '''Frequency:''' 50 Hz/60 Hz, '''Number of Poles:''' 4-pole, '''Operating Temperature: '''-30°C to 40°
−
|-
+
|- valign="top"
 
|align = "center"|4
 
|align = "center"|4
−
|<font color="#0000FF"><u>[http://aquabased.rtrk.com/?scid=1898555&rl_alt=http%253A%252F%252Fwww.aquabased.com&rl_path=/adhesives.htm Aqua Based Technologies]</u></font>
+
|<font color="#0000FF"><u>[http://www.china-windturbine.com/news/doubly_wind_turbines.htm North Heavy Company]</u></font>
−
|<font color="#0000FF"><u>[http://aquabased.rtrk.com/?scid=1898555&rl_alt=http%253A%252F%252Fwww.aquabased.com&rl_path=/adhesives.htm Aqua Tack 320]</u></font>
+
|2 MW DFIG
−
|Pressure sensitive adhesive for direct food contact.  All levels of tack and shear are available. FDA 175.320
+
|'''Rated Power:''' 2.0 MW, '''Rated Voltage:''' 690V, '''Rated Current:''' 1670A, '''Frequency:''' 50Hz, '''Number of Poles :''' 4-pole,  '''Rotor Rated Voltage:''' 1840V, '''Rotor Rated Current''' 670A, '''Rated Speed:''' 1660rpm;''' Power Speed Range: '''520-1950 rpm, '''Insulation Class:''' H, '''Protection Class:''' IP54,  '''Motor Temperature Rise''' =<nowiki><</nowiki>95K
−
|-
+
|- valign="top"
 
|align = "center" bgcolor = "#DCE6F1"|5
 
|align = "center" bgcolor = "#DCE6F1"|5
−
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.adhesivetech.com/ Adhesive Technologies, Inc.]</u></font>
+
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://docs.google.com/viewer?a=v&q=cache:X9KReq0YEigJ:www.iberdrolarenewables.us/bluecreek/docs/primary/03-Appendices/_Q-Brochure-of-G-90-Turbine/Brochure-G-90-Turbine.pdf+gamesa+g90&hl=en&pid=bl&srcid=ADGEESgldaLogi1i5Pg71zE-FO_AMqbeKL5wJiA8LVklgq5ev2in Gamesa]</u></font>
−
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://packaging.informous.com/view/5765-formula-061-hot-melt-pressure-sensitive-adhesive Formula 061 Hot Melt Pressure Sensitive Adhesive]</u></font>
+
|bgcolor = "#DCE6F1"|G90
−
|bgcolor = "#DCE6F1"|Hot melt pressure sensitive adhesive being 100% solids containing no solvent. Excellent adhesion to PE and low energy surfaces. High peel adhesion and high initial tack. A qualified toxicologist has analyzed the components in Ad-Tech 061. This product is certified to be non-toxic. Additionally, Ad-Tech 061 meets FDA CFR 175.105 adhesive requirements for intermittent contact with food.
+
|bgcolor = "#DCE6F1"|'''Rated Voltage:''' 690 V,  '''Frequency:''' 50 Hz,  '''Number of Poles:''' 4,  '''Rotational Speed:''' 900:1,900 rpm (rated 1,680 rpm) (50Hz); '''Rated Stator Current: '''1,500 A @ 690 V, '''Protection Class:''' IP 54, '''Power Factor(standard):'''  0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, '''Power Factor(Optional):''' 0.95 CAP - 0.95 IND throughout the power range
 +
|- valign="top"
 +
|align = "center"|6
 +
|<font color="#0000FF"><u>[http://www.nordex-online.com/en/products-services/wind-turbines/n100-25-mw Nordex]</u></font>
 +
| N80
 +
|'''Rated Power:''' 2.5 MW, '''Rated Voltage:''' 690V, '''Frequency:''' 50/60Hz, '''Cooling Systems:''' liquid/air
 +
|- valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|7
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.nordex-online.com/en/products-services/wind-turbines/n100-25-mw Nordex]</u></font>
 +
|bgcolor = "#DCE6F1"| N90
 +
|bgcolor = "#DCE6F1"|'''Rated Power:''' 2.5 MW, '''Rated Voltage: '''690V,''' Frequency: '''50/60Hz,''' Cooling Systems: '''liquid/air
 +
|- valign="top"
 +
|align = "center"|8
 +
|<font color="#0000FF"><u>[http://www.nordex-online.com/en/products-services/wind-turbines/n100-25-mw Nordex]</u></font>
 +
|N100
 +
|'''Rated Power:''' 2.4 MW, '''Rated Voltage: '''690V, '''Frequency: '''50/60Hz, '''Cooling Systems: '''liquid/air
 +
|- valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|9
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.nordex-online.com/en/products-services/wind-turbines/n100-25-mw Nordex]</u></font>
 +
|bgcolor = "#DCE6F1"| N117
 +
|bgcolor = "#DCE6F1"|'''Rated Power:''' 2.5 MW, '''Rated Voltage: '''690V, '''Frequency: '''50/60Hz, '''Cooling Systems: '''liquid/air
 +
|- valign="top"
 +
|align = "center"|10
 +
|<font color="#0000FF"><u>[http://www.converteam.com/majic/pageServer/1704040148/en/index.html Converteam]</u></font>
 +
|DFIG
 +
|NA
 +
|- valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|11
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://geoho.en.alibaba.com/product/252321923-0/1_5MW_doubly_fed_asynchronous_generator.html Xian Geoho Energy Technology]</u></font>
 +
|bgcolor = "#DCE6F1"|1.5MW DFIG
 +
|bgcolor = "#DCE6F1"|'''Rated Power:''' 1550KW,  '''Rated Voltage: '''690V, '''Rated Speed: '''1755 r/min, '''Speed Range: '''975<nowiki>~</nowiki>1970 r/min, '''Number of Poles: '''4-pole, '''Stator Rated Voltage: '''690V±10%, '''Stator Rated Current: '''1115A; '''Rotor Rated Voltage: '''320V, '''Rotor Rated Current: '''430A, '''Winding Connection: '''Y / Y, '''Power Factor: '''0.95(Lead) <nowiki>~</nowiki> 0.95Lag,''' Protection Class: '''IP54, '''Insulation Class: '''H, '''Work Mode: '''S1, '''Installation ModeI: '''M B3, '''Cooling Mode: '''Air cooling,  '''Weight: '''6950kg
 +
|- valign="top"
 +
|align = "center"|12
 +
|<font color="#0000FF"><u>[http://www.tecowestinghouse.com/products/custom_engineered/DF_WR_ind_generator.html Tecowestinghouse]</u></font>
 +
|TW450XX (0.5-1 KW)
 +
|'''Rated Power:''' 0.5 -1 KW, '''Rated Voltage: '''460/ 575/ 690 V, '''Frequency: '''50/ 60 Hz, '''Number of Poles: '''4/6,''' Ambient Temp.(°C): -'''40 to 50, '''Speed Range (% of Synch. Speed): '''68% to 134%,  '''Power Factor (Leading): -'''0.90 to <nowiki>+</nowiki>0.90 , '''Insulation Class: '''H/F, '''Efficiency: '''<nowiki>></nowiki>= 96%
 +
|- valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|13
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.tecowestinghouse.com/products/custom_engineered/DF_WR_ind_generator.html Tecowestinghouse]</u></font>
 +
|bgcolor = "#DCE6F1"|TW500XX (1-2 KW)
 +
|bgcolor = "#DCE6F1"|'''Rated Power:''' 1-2 kW,''' Rated Voltage:''' 460/ 575/ 690 V, '''Frequency:''' 50/ 60 Hz, '''Number of Poles:''' 4/6, Ambient Temp.(°C): -40 to 50; '''Speed Range (% of Synch. Speed):''' 68 to 134%, '''Power Factor(Leading): -'''0.90 to <nowiki>+</nowiki>0.90, '''Insulation Class: '''H/F, '''Efficiency:''' <nowiki>></nowiki>= 96%
 +
|- valign="top"
 +
|align = "center"|14
 +
|<font color="#0000FF"><u>[http://www.tecowestinghouse.com/products/custom_engineered/DF_WR_ind_generator.html Tecowestinghouse]</u></font>
 +
|TW560XX (2-3 KW)
 +
|'''Rated Power: '''2-3kW, '''Rated Voltage: '''460/ 575/ 690 V, '''Frequency: '''50/ 60 Hz, '''Number of Poles: '''4/6, '''Ambient Temp(°C): ''' -40 to 50, '''Speed Range(% of Synch. Speed)''':''' '''68 to 134%, '''Power Factor(Leading):''' -0.90 to <nowiki>+</nowiki>0.90, '''Insulation Class: '''H/F, '''Efficiency:''' <nowiki>></nowiki>= 96%.
 +
|- valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|15
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.acciona-na.com/About-Us/Our-Projects/U-S-/West-Branch-Wind-Turbine-Generator-Assembly-Plant.aspx Acciona]</u></font>
 +
|bgcolor = "#DCE6F1"|AW1500
 +
|bgcolor = "#DCE6F1"|'''Rated Power:''' 1.5MW, '''Rated Voltage: '''690 V, '''Frequency: '''50 Hz, '''Number of Poles: '''4,  '''Rotational Speed: '''900:1,900 rpm(rated 1,680 rpm) (50Hz), '''Rated Stator Current: '''1,500 A @ 690 V, '''Protection Class: '''IP54, '''Power Factor(standard): '''0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, '''Power factor(optional):''' 0.95 CAP - 0.95 IND throughout the power range
 +
|- valign="top"
 +
|align = "center"|16
 +
|<font color="#0000FF"><u>[http://www.acciona-na.com/About-Us/Our-Projects/U-S-/West-Branch-Wind-Turbine-Generator-Assembly-Plant.aspx Acciona]</u></font>
 +
|AW3000
 +
|'''Rated Power:''' 3.0MW, '''Rated Voltage: ''' 690 V, '''Frequency: '''50 Hz, '''Number of Poles: '''4, '''Rotational Speed: '''900:1,900 rpm(rated 1,680 rpm) (50Hz), '''Rated Stator Current: '''1,500 A @ 690 V, '''Protection Class: '''IP54, '''Power Factor(standard): '''0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, '''Power Factor (optional):''' 0.95 CAP - 0.95 IND throughout the power range
 +
|- valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|17
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://gepower.com/businesses/ge_wind_energy/en/index.htm General Electric]</u></font>
 +
|bgcolor = "#DCE6F1"|GE 1.5/2.5MW
 +
|bgcolor = "#DCE6F1"|'''Rated Power:''' 1.5/2.5 MW, '''Frequency(Hz): '''50/60
 
|-
 
|-
 
|}
 
|}
  
−
=[[Search Strategy for PSA]]=
+
= IP Search & Analysis =
 +
== Doubly-fed Induction Generator: Search Strategy ==
 +
The present study on the IP activity in the area of horizontal axis wind turbines with focus on '''''Doubly-fed Induction Generator (DFIG)''''' is based on a search conducted on Thomson Innovation.
 +
===Control Patents===
  
−
The search strategy page contains:
 
−
* Control Patents
 
−
* Patent class definitions
 
−
* Search Query
 
−
* Sample Patent Analysis
 
−
 
−
=New Innovations=
 
−
==Reusable closures for packages==
 
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
|align = "center" bgcolor = "#95B3D7"|'''Patent number'''
+
|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Date of publication'''
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Patent/Publication No.'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Assignee'''
+
|align = "center" bgcolor = "#4F81BD" width="15%"|<font color="#FFFFFF">'''Publication Date<br>'''(mm/dd/yyyy)</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Title'''
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Assignee/Applicant'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Abstract'''
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Title'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Problem in prior art'''
+
|- valign="top"
−
|align = "center" bgcolor = "#95B3D7"|'''Solution provided by patent'''
+
|align = "center" bgcolor = "#DCE6F1"|1
−
|align = "center" bgcolor = "#95B3D7"|'''Image'''
+
|align = "center" bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6278211.PN.&OS=PN/6278211&RS=PN/6278211 US6278211]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|08/02/01
 +
|bgcolor = "#DCE6F1"|Sweo Edwin
 +
|bgcolor = "#DCE6F1"|Brush-less doubly-fed induction machines employing dual cage rotors
 +
|- valign="top"
 +
|align = "center"|2
 +
|align = "center"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6954004.PN.&OS=PN/6954004&RS=PN/6954004 US6954004]</u></font>
 +
|align = "center"|10/11/05
 +
|Spellman High Voltage Electron
 +
|Doubly fed induction machine
 +
|- valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|3
 +
|align = "center" bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7411309.PN.&OS=PN/7411309&RS=PN/7411309 US7411309]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|08/12/08
 +
|bgcolor = "#DCE6F1"|Xantrex Technology
 +
|bgcolor = "#DCE6F1"|Control system for doubly fed induction generator
 +
|- valign="top"
 +
|align = "center"|4
 +
|align = "center"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7485980.PN.&OS=PN/7485980&RS=PN/7485980 US7485980]</u></font>
 +
|align = "center"|02/03/09
 +
|Hitachi
 +
|Power converter for doubly-fed power generator system
 +
|- valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|5
 +
|align = "center" bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7800243.PN.&OS=PN/7800243&RS=PN/7800243 US7800243]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|09/21/10
 +
|bgcolor = "#DCE6F1"|Vestas Wind Systems
 +
|bgcolor = "#DCE6F1"|Variable speed wind turbine with doubly-fed induction generator compensated for varying rotor speed
 +
|- valign="top"
 +
|align = "center"|6
 +
|align = "center"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7830127.PN.&OS=PN/7830127&RS=PN/7830127 US7830127]</u></font>
 +
|align = "center"|11/09/10
 +
|Wind to Power System
 +
|Doubly-controlled asynchronous generator
 
|-
 
|-
−
|align = "center"|<font color="#0000FF">[http://v3.espacenet.com/searchResults?NUM=EP2228211A2&DB=EPODOC&submitted=true&locale=en_V3&ST=number&compact=false EP2228211A2]</font>
+
|}
−
|align = "center"|9/15/2010
+
 
−
|align = "center"|AVERY DENNISON CORP
+
===Patent Classes===
−
|align = "center"| Reusable closures for packages and methods of making and using the same
+
 
−
|align = "center"|The present invention relates to a method of providing a reusable closure for packages in the presence of moisture from refrigerated or frozen food packing environments, comprising (a) providing a package having a folding portion and a main portion wherein the folding portion is able to be folded over to cover the main portion of the package, (b) folding the folding portion over to close the package and (c) applying an adhesive article to the folded portion and the main portion so that the package remains closed, wherein the adhesive article comprises (i) a moisture resistant substrate having a first and second surface, and (ii) a removable adhesive covering at least a first portion of the first surface, wherein the removable adhesive has a Moist Loop Test result of at least about 0.8 N/25 mm at a test plate temperature of 5°C.
+
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
|Manufacturers have proposed numerous forms of integrated means to provide a way of resealing a package, such as a frozen food bag. Consumers have typically used tape, clamps, twist ties, etc. to reclose packages. However, these systems are not entirely satisfying to consumers.
+
|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
−
|One solution to the resealing problem is to use a laminate with a pressure sensitive adhesive (PSA). If the adhesive is selected to provide removability, the consumer may open and reseal the package with the PSA laminate. The PSA laminate can provide easy application of the laminate, easy opening and closing of the package, and also writing or printing capabilities for identification of the package contents.
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Class No.'''</font>
−
|[[Image:Reusable closure.png|thumb|250px]]
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Class Type'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Definition'''</font>
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|1
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.wipo.int/ipcpub/#refresh=page&notion=scheme&version=20110101&symbol=F03D0009000000 F03D9/00 ]</u></font>
 +
|bgcolor = "#DCE6F1"|IPC
 +
|bgcolor = "#DCE6F1"|Machines or engines for liquids; wind, spring, or weight motors; producing mechanical power or a reactive propulsive thrust, not otherwise provided for / Wind motors / '''Adaptations of wind motors for special use; Combination of wind motors with apparatus driven thereby (aspects predominantly concerning driven apparatus) '''
 +
|-valign="top"
 +
|align = "center"|2
 +
|<font color="#0000FF"><u>[http://v3.espacenet.com/eclasrch?classification=ecla&locale=en_EP&ECLA=f03d9/00c F03D9/00C ]</u></font>
 +
|ECLA
 +
|Machines or engines for liquids; wind, spring, or weight motors; producing mechanical power or a reactive propulsive thrust, not otherwise provided for / Wind motors / Adaptations of wind motors for special use; Combination of wind motors with apparatus driven thereby (aspects predominantly concerning driven apparatus) /''' The apparatus being an electrical generator '''
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|3
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.wipo.int/ipcpub/#&refresh=page&notion=scheme&version=20110101&symbol=H02J0003380000 H02J3/38 ]</u></font>
 +
|bgcolor = "#DCE6F1"|IPC
 +
|bgcolor = "#DCE6F1"|Generation, conversion, or distribution of electric power / Circuit arrangements or systems for supplying or distributing electric power; systems for storing electric energy / Circuit arrangements for ac mains or ac distribution networks / '''Arrangements for parallely feeding a single network by two or more generators, converters or transformers '''
 +
|-valign="top"
 +
|align = "center"|4
 +
|<font color="#0000FF"><u>[http://www.wipo.int/ipcpub/#refresh=page&notion=scheme&version=20110101&symbol=H02K0017420000 H02K17/42 ]
 +
</u></font>
 +
|IPC
 +
|Generation, conversion, or distribution of electric power / Dynamo-electric machines / Asynchronous induction motors; Asynchronous induction generators / '''Asynchronous induction generators '''
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|5
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.wipo.int/ipcpub/#refresh=page&notion=scheme&version=20110101&symbol=H02P0009000000 H02P9/00 ]</u></font>
 +
|bgcolor = "#DCE6F1"|IPC
 +
|bgcolor = "#DCE6F1"|Generation, conversion, or distribution of electric power / Control or regulation of electric motors, generators, or dynamo-electric converters; controlling transformers, reactors or choke coils /''' Arrangements for controlling electric generators for the purpose of obtaining a desired output '''
 +
|-valign="top"
 +
|align = "center"|6
 +
|<font color="#0000FF"><u>[http://www.uspto.gov/web/patents/classification/uspc290/sched290.htm#C290S044000 290/044]</u></font>
 +
|USPC
 +
|Prime-mover dynamo plants / electric control / Fluid-current motors / '''Wind '''
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|7
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.uspto.gov/web/patents/classification/uspc290/sched290.htm#C290S055000 290/055]</u></font>
 +
|bgcolor = "#DCE6F1"|USPC
 +
|bgcolor = "#DCE6F1"|Prime-mover dynamo plants / Fluid-current motors / '''Wind'''
 +
|-valign="top"
 +
|align = "center"|8
 +
|<font color="#0000FF"><u>[http://www.uspto.gov/web/patents/classification/uspc318/sched318.htm#C318S727000 318/727]</u></font>
 +
|USPC
 +
|Electricity: motive power systems / '''Induction motor systems '''
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|9
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.uspto.gov/web/patents/classification/uspc322/sched322.htm#C322S047000 322/047]</u></font>
 +
|bgcolor = "#DCE6F1"|USPC
 +
|bgcolor = "#DCE6F1"|Electricity: single generator systems / Generator control / '''Induction generator '''
 
|-
 
|-
 
|}
 
|}
  
−
==Adhesive clamp for closing a bag==
+
===Concept Table===
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
|align = "center" bgcolor = "#95B3D7"|'''Patent number'''
+
|align = "center" bgcolor = "#4F81BD" rowspan = "2" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Date of publication'''
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Concept 1'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Assignee'''
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Concept 2'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Title'''
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Concept 3'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Abstract'''
+
−
|align = "center" bgcolor = "#95B3D7"|'''Problem in prior art'''
+
−
|align = "center" bgcolor = "#95B3D7"|'''Solution provided by patent'''
+
−
|align = "center" bgcolor = "#95B3D7"|'''Image'''
+
 
|-
 
|-
−
|align = "center"|<font color="#0000FF">[http://www.wipo.int/pctdb/en/wo.jsp?WO=2011004271 WO2011004271A2]</font>
+
|align = "center" bgcolor = "#95B3D7"|'''Doubly Fed'''
−
|align = "center"|1/13/2011
+
|align = "center" bgcolor = "#95B3D7"|'''Induction'''
−
|align = "center"|EL TACK LTD
+
|align = "center" bgcolor = "#95B3D7"|'''Generator'''
−
|align = "center"|An adhesive clamp for closing a bag
+
|-
−
|align = "center"|An adhesive clamp for reclosing a packaging bag, the adhesive clamp comprises a tape having one side of the tape coated with an adhesive substance and a clamping strip of foldable non-elastic material attached to the adhesive side of the tape and where the tape is wider and longer than the clamping strip.
+
|align = "center" bgcolor = "#DCE6F1"|1
−
|Prior art mentions about various reclosable techniques. Zipper pack known in the art consists of female and male zipper members provided at an opening of the pack. Zipper may easily collapse under external pressure. There are difficulties in manufacturing zipper packs, including increase in manufacturing cost. There are various types of fasteners for reclosing bags. Such fasteners are usually quite bulky and are bought independently of the package. However, such solutions are usually not at hand when a bag should be closed. Other solutions use an adhesive tack. After opening the bag, the user can fold the bag and use the tack to keep the edge folded. This type of solution is also advantageous as it includes the folding of the bag, which reduces the amount of air in the bag, thus reducing humidity and oxygen in the bag. However, this solution is effective only for a small number of opening and reclosing cycles. Another disadvantage is that the adhesive does not function in deep freeze conditions and the bag will not stay closed when in deep freeze conditions.
+
|bgcolor = "#DCE6F1"|doubly fed
−
|The invention is a a package-reclosing device devoid of the mentioned limitations. According to one aspect of the present invention there is provided an adhesive clamp for closing a packaging bag.
+
|bgcolor = "#DCE6F1"|induction
−
| [[Image:Adhesive clamp.png|thumb|250px]]
+
|bgcolor = "#DCE6F1"|generator
 +
|-
 +
|align = "center"|2
 +
|double output
 +
|asynchronous
 +
|machines
 +
|-
 +
|align = "center" bgcolor = "#DCE6F1"|3
 +
|bgcolor = "#DCE6F1"|dual fed
 +
|bgcolor = "#DCE6F1"|
 +
|bgcolor = "#DCE6F1"|systems
 +
|-
 +
|align = "center"|4
 +
|dual feed
 +
|
 +
|  
 +
|-
 +
|align = "center" bgcolor = "#DCE6F1"|5
 +
|bgcolor = "#DCE6F1"|dual output
 +
|bgcolor = "#DCE6F1"|
 +
|bgcolor = "#DCE6F1"|  
 
|-
 
|-
 
|}
 
|}
  
−
==Multilayer Film==
+
===Thomson Innovation Search===
 +
'''Database:''' Thomson Innovation<br>
 +
'''Patent coverage:''' US EP WO JP DE GB FR CN KR DWPI<br>
 +
'''Time line:''' 01/01/1836 to 07/03/2011
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
|align = "center" bgcolor = "#95B3D7"|'''Patent number'''
+
|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Date of publication'''
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Concept'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Assignee'''
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Scope'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Title'''
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Search String'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Abstract'''
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''No. of Hits'''</font>
−
|align = "center" bgcolor = "#95B3D7"|'''Problem in prior art'''
+
|-valign="top"
−
|align = "center" bgcolor = "#95B3D7"|'''Solution provided by patent'''
+
|align = "center" bgcolor = "#DCE6F1"|1
−
|align = "center" bgcolor = "#95B3D7"|'''Image'''
+
|bgcolor = "#DCE6F1"|Doubly-fed Induction Generator: Keywords(broad)
−
|-
+
|bgcolor = "#DCE6F1"|Claims, Title, and Abstract
−
|align = "center"|<font color="#0000FF">[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080081183%22.PGNR.&OS=DN/20080081183&RS=DN/20080081183 US20080081183A1]</font>
+
|bgcolor = "#DCE6F1"|(((((doubl<nowiki>*</nowiki>3 OR dual<nowiki>*</nowiki>3 OR two) ADJ3 (power<nowiki>*</nowiki>2 OR output<nowiki>*</nowiki>4 OR control<nowiki>*</nowiki>4 OR fed OR feed<nowiki>*</nowiki>3)) NEAR5 (induction OR asynchronous)) NEAR5 (generat<nowiki>*</nowiki>3 OR machine<nowiki>*</nowiki>1 OR dynamo<nowiki>*</nowiki>1)) OR dfig or doig)
−
|align = "center"|4/3/2008
+
|align = "right" bgcolor = "#DCE6F1"|873
−
|align = "center"|DE BOER, Jurjen
+
|-valign="top"
−
|align = "center"|Multilayer Film
+
|align = "center"|2
−
|align = "center"|An blow-extrudable film that ensures a reclosing ability after a first opening consists of a support layer on which a connecting layer and an overlying cover layer are arranged. The connecting layer essentially consists of a pressure sensitive hot melt adhesive. Both the support layer and the cover layer are essentially composed of polyethylene. The support layer may e.g. be made of low density and/or high density polyethylene (LD-PE respectively HD-PE). The cover layer consists of up to 100% LLD-PE (linear low density polyethylene) or of a blend of LLD-PE and polyethylene. Due to the LLD-PE content, the cover layer has a higher adhesion on the connecting layer than the support layer. In this manner it is ensured that in the first opening process, during which a portion of the support layer is separated, the connecting layer remains on the cover layer. Pressing the separated portion onto the connecting layer restores the bond between the separated portion and the film and recloses a container that is sealed by the film.
+
|Doubly-fed Induction Generator: Keywords(broad)
−
|Food packages are often composed of a lower portion, e.g. in the form of a tray, that is covered with a film and welded together with the film at its edges to form an airtight package. Compound film of the prior art is unsuitable as a closure film for food packages due to its compositions, insufficient stability and excessive resilience. When the package is opened, the sealing layer of the compound film is detached in the sealing zone, thereby causing a cohesive failure of the hot melt.there is also a risk for the hot melt to be exposed during the filling operation due to lesions of the surface and thus enters in direct contact with the foods.
+
|Full Spec.
−
|This is achieved by a multilayer film where in connecting layer is essentially composed of a pressure sensitive hot melt adhesive,Where in the cover layer and the support layer are essentially composed of polyethylene
+
|(((((doubl<nowiki>*</nowiki>3 OR dual<nowiki>*</nowiki>3 OR two) ADJ3 (power<nowiki>*</nowiki>2 OR output<nowiki>*</nowiki>1 OR control<nowiki>*</nowiki>4 OR fed OR feed<nowiki>*</nowiki>3)) NEAR5 (generat<nowiki>*</nowiki>3 OR machine<nowiki>*</nowiki>1 OR dynamo<nowiki>*</nowiki>1))) OR dfig or doig)
−
| [[Image:Multilayer Film.jpg|thumb|center|250px]]
+
|align = "center"|<nowiki>-</nowiki>
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|3
 +
|bgcolor = "#DCE6F1"|Induction Machine: Classes
 +
|bgcolor = "#DCE6F1"|US, IPC, and ECLA Classes
 +
|bgcolor = "#DCE6F1"|((318/727 OR 322/047) OR (H02K001742))
 +
|align = "center" bgcolor = "#DCE6F1"|<nowiki>-</nowiki>
 +
|-valign="top"
 +
|align = "center"|4
 +
|Generators: Classes
 +
|US, IPC, and ECLA Classes
 +
|((290/044 OR 290/055) OR (F03D000900C OR H02J000338 OR F03D0009<nowiki>*</nowiki> OR H02P0009<nowiki>*</nowiki>))
 +
|align = "center"|<nowiki>-</nowiki>
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|5
 +
|bgcolor = "#DCE6F1"|Combined Query
 +
|align = "center" bgcolor = "#DCE6F1"|<nowiki>-</nowiki>
 +
|align = "left" bgcolor = "#DCE6F1"|2 AND 3
 +
|align = "right" bgcolor = "#DCE6F1"|109
 +
|-valign="top"
 +
|align = "center"|6
 +
|Combined Query
 +
|align = "center"|<nowiki>-</nowiki>
 +
|align = "left"|2 AND 4
 +
|align = "right"|768
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|7
 +
|bgcolor = "#DCE6F1"|French Keywords
 +
|bgcolor = "#DCE6F1"|Claims, Title, and Abstract
 +
|bgcolor = "#DCE6F1"|((((doubl<nowiki>*</nowiki>3 OR dual<nowiki>*</nowiki>3 OR two OR deux) NEAR4 (nourris OR feed<nowiki>*</nowiki>3 OR puissance OR sortie<nowiki>*</nowiki>1 OR contrôle<nowiki>*</nowiki>1)) NEAR4 (induction OR asynchron<nowiki>*</nowiki>1) NEAR4 (générateur<nowiki>*</nowiki>1 OR generator<nowiki>*</nowiki>1 OR machine<nowiki>*</nowiki>1 OR dynamo<nowiki>*</nowiki>1)) OR dfig or doig)
 +
|align = "right" bgcolor = "#DCE6F1"|262
 +
|-valign="top"
 +
|align = "center"|8
 +
|German Keywords
 +
|Claims, Title, and Abstract
 +
|(((((doppel<nowiki>*</nowiki>1 OR dual OR two OR zwei) ADJ3 (ausgang OR ausgänge OR kontroll<nowiki>*</nowiki> OR control<nowiki>*</nowiki>4 OR gesteuert OR macht OR feed<nowiki>*</nowiki>1 OR gefüttert OR gespeiste<nowiki>*</nowiki>1)) OR (doppeltgefüttert OR doppeltgespeiste<nowiki>*</nowiki>1)) NEAR4 (((induktion OR asynchronen) NEAR4 (generator<nowiki>*</nowiki>2 OR maschine<nowiki>*</nowiki>1 OR dynamo<nowiki>*</nowiki>1)) OR (induktion?maschinen OR induktion?generatoren OR asynchronmaschine OR asynchrongenerator))) OR dfig)
 +
|align = "right"|306
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|9
 +
|bgcolor = "#DCE6F1"|Doubly-fed Induction Generator: Keywords(narrow)
 +
|bgcolor = "#DCE6F1"|Full Spec.
 +
|bgcolor = "#DCE6F1"|(((((((doubl<nowiki>*</nowiki>3 OR dual<nowiki>*</nowiki>3) ADJ3 (power<nowiki>*</nowiki>2 OR output<nowiki>*</nowiki>4 OR control<nowiki>*</nowiki>4 OR fed OR feed<nowiki>*</nowiki>3))) NEAR5 (generat<nowiki>*</nowiki>3 OR machine<nowiki>*</nowiki>1 OR dynamo<nowiki>*</nowiki>1))) SAME wind) OR (dfig SAME wind))
 +
|align = "right" bgcolor = "#DCE6F1"|1375
 +
|-valign="top"
 +
|align = "center"|10
 +
| Top Assignees
 +
|align = "center"|<nowiki>-</nowiki>
 +
|(vestas* OR (gen* ADJ2 electric*) OR ge OR hitachi OR woodward OR repower OR areva OR gamesa OR ingeteam OR nordex OR siemens OR (abb ADJ2 research) OR (american ADJ2 superconductor*) OR (korea ADJ2 electro*) OR (univ* NEAR3 navarra) OR (wind OR technolog*) OR (wind ADJ2 to ADJ2 power))
 +
|align = "center"|-
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|11
 +
|bgcolor = "#DCE6F1"|Combined Query
 +
|align = "center" bgcolor = "#DCE6F1"|<nowiki>-</nowiki>
 +
|bgcolor = "#DCE6F1"|2 AND 10
 +
|align = "right" bgcolor = "#DCE6F1"|690
 +
|-valign="top"
 +
|align = "center"|12
 +
|Top Inventors
 +
|align = "center"|<nowiki>-</nowiki>
 +
|((Andersen NEAR2 Brian) OR (Engelhardt NEAR2 Stephan) OR (Ichinose NEAR2 Masaya) OR (Jorgensen NEAR2 Allan NEAR2 Holm) OR ((Scholte ADJ2 Wassink) NEAR2 Hartmut) OR (OOHARA NEAR2 Shinya) OR (Rivas NEAR2 Gregorio) OR (Erdman NEAR2 William) OR (Feddersen NEAR2 Lorenz) OR (Fortmann NEAR2 Jens) OR (Garcia NEAR2 Jorge NEAR2 Martinez) OR (Gertmar NEAR2 Lars) OR (KROGH NEAR2 Lars) OR (LETAS NEAR2 Heinz NEAR2 Hermann) OR (Lopez NEAR2 Taberna NEAR2 Jesus) OR (Nielsen NEAR2 John) OR (STOEV NEAR2 Alexander) OR (W?ng NEAR2 Haiqing) OR (Yuan NEAR2 Xiaoming))
 +
|align = "center"|-
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|13
 +
|bgcolor = "#DCE6F1" |Combined Query
 +
|align = "center" bgcolor = "#DCE6F1"|<nowiki>-</nowiki>
 +
|bgcolor = "#DCE6F1"|((3 OR 4) AND 10)
 +
|align = "right" bgcolor = "#DCE6F1"|899
 +
|-valign="top"
 +
|align = "center"|14
 +
|Final Query
 +
|align = "center"|<nowiki>-</nowiki>
 +
|1 OR 5 OR 6 OR 7 OR 8 OR 9 OR 11 OR 13
 +
|'''2466(1060 INPADOC Families)'''
 
|-
 
|-
 
|}
 
|}
  
−
=Interactive Taxonomy=
+
==Taxonomy==
−
''Click on the Nodes to expand or collapse them''<br>
+
*''Use the mouse(click and drag/scroll up or down/click on nodes) to explore nodes in the detailed taxonomy''
−
''Click on the Red Arrow adjacent to the node name to access the Dashboard for that particular node''<br>
+
*''Click on the red arrow adjacent to the node name to view the content for that particular node in the dashboard''  
−
''Click on any node and drag to move the taxonomy within the display field''
+
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
|<mm>[[Pressure_Sensitve_Adhesive1.mm‎ |flash|fit|title Pressure Sensitive Adhesive - Interactive Taxonomy|400pt]]</mm>
+
|<mm>[[Doubly_fed_Induction_Generator.mm|Interactive Mind-map|center|flash|Doubly-fed Induction Generator|600pt]]</mm>
 
|}
 
|}
  
−
=Dashboard=
+
==Sample Analysis==
−
 
+
A sample of 139 patents from the search is analyzed based on the taxonomy.
−
A sample Dashboard with categorized sample patents can be accessed <b>[https://www.dolcera.com/auth/dashboard/dashboard.php?workfile_id=873&node_id=428284#app=6baf&9625-selectedIndex=1 here]. </b>
+
Provided a link below for sample spread sheet analysis for doubly-fed induction generators.<br>
−
 
+
===Patent Analysis===
−
=Manufacturers and distributors=
+
−
* Please find a list of '''Pressure sensitive adhesive(PSA)''' manufacturers and distributors '''[http://www.thomasnet.com/products/adhesives-pressure-sensitive-products-461251-1.html here]'''. The PSA's produced and distributed by these companies are used for food packaging and other applications.
+
−
 
+
−
=Key Opinion Leaders=
+
−
Listed below are few experts in Pressure sensitive adhesive in Food packaging industries.
+
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
 
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
|align = "center" bgcolor = "#FAC090"|'''Sr.No'''
+
|align = "center" bgcolor = "#4F81BD" rowspan = "2" width="38"|<font color="#FFFFFF">'''S.No.'''</font>
−
|align = "center" bgcolor = "#FAC090"|'''Name'''
+
|align = "center" bgcolor = "#4F81BD" rowspan = "2" |<font color="#FFFFFF">'''Patent/Publication No.'''</font>
−
|align = "center" bgcolor = "#FAC090"|'''Educational Qualification'''
+
|align = "center" bgcolor = "#4F81BD" rowspan = "2" width="105"|<font color="#FFFFFF">'''Publication Date<br>'''(mm/dd/yyyy)</font>
−
|align = "center" bgcolor = "#FAC090"|'''Present company'''
+
|align = "center" bgcolor = "#4F81BD" rowspan = "2"|<font color="#FFFFFF">'''Assignee/Applicant'''</font>
−
|align = "center" bgcolor = "#FAC090"|'''Present  position in company'''
+
|align = "center" bgcolor = "#4F81BD" rowspan = "2"|<font color="#FFFFFF">'''Title'''</font>
−
|align = "center" bgcolor = "#FAC090"|'''Expertise'''
+
|align = "center" bgcolor = "#4F81BD" colspan = "2"|<font color="#FFFFFF">'''Dolcera Analysis'''</font>
−
|align = "center" bgcolor = "#FAC090"|'''Experience'''
+
−
|align = "center" bgcolor = "#FAC090"|'''Image'''
+
 
|-
 
|-
−
|align = "center" bgcolor = "#FAC090"|'''1'''
+
|align = "center" bgcolor = "#95B3D7"|'''Problem'''
−
|<font color="#0000FF"><u>[http://www.linkedin.com/pub/janice-evers/6/482/2a0 Jenice Evers]</u></font>
+
|align = "center" bgcolor = "#95B3D7"|'''Solution'''
−
| 1.University of Saint Thomas - School of Business,MBA , Manufacturing Systems , 1991 — 2001<br>2.University of Minnesota-Twin Cities,BS , Chemical Engineering - Minor in Biology , 1982 — 1985
+
|-valign="top"
−
|Scholle Corporation
+
|align = "center" bgcolor = "#DCE6F1"|1
−
|Quality Systems Manager
+
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100117605%22.PGNR.&OS=DN/20100117605&RS=DN/20100117605 US20100117605]</u></font>
−
|Product development experience in medical adhesive and wound care products, consumer products, food packaging, and durable goods. Class I and II medical device experience.Technology experience in coated and extruded polymer materials such as pressure sensitive adhesives, coated materials, optical films, and multilayer extruded films.
+
|align = "center" bgcolor = "#DCE6F1"|05/13/10
−
|22 years
+
|bgcolor = "#DCE6F1"|Woodward
−
| [[Image:Jenice1.png|thumb|center|200px|[http://www.linkedin.com/pub/janice-evers/6/482/2a0 '''Jenice Evers''']]]
+
|bgcolor = "#DCE6F1"|Method of and apparatus for operating a double-fed asynchronous machine in the event of transient mains voltage changes
 +
|bgcolor = "#DCE6F1"|The short-circuit-like currents in the case of transient mains voltage changes lead to a corresponding air gap torque which loads the drive train and transmission lines can damages or reduces the drive train and power system equipments.
 +
|bgcolor = "#DCE6F1"|The method presents that the stator connecting with the network and the rotor with a converter. The converter is formed to set a reference value of electrical amplitude in the rotor, by which a reference value of the electrical amplitude is set in the rotor after attaining a transient mains voltage change, such that the rotor flux approaches the stator flux.
 +
|-valign="top"
 +
|align = "center"|2
 +
|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100045040%22.PGNR.&OS=DN/20100045040&RS=DN/20100045040 US20100045040]</u></font>
 +
|align = "center"|02/25/10
 +
|Vestas Wind Systems
 +
|Variable speed wind turbine with doubly-fed induction generator compensated for varying rotor speed
 +
|The DFIG system has poor damping of oscillations within the flux dynamics due to cross coupling between active and reactive currents, which makes the system potentially unstable under certain circumstances and complicates the work of the rotor current controller. These oscillations can damage the drive train mechanisms.
 +
|A compensation block is arranged, which feeds a compensation control output to the rotor of the generator. The computation unit computes the control output during operation of the turbine to compensate partly for dependencies on a rotor angular speed of locations of poles of a generator transfer function, so that the transfer function is made independent of variations in the speed during operation of the turbine which eliminates the oscillations and increases the efficiency of the wind turbine.
 +
|-valign="top"
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|align = "center" bgcolor = "#DCE6F1"|3
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090267572%22.PGNR.&OS=DN/20090267572&RS=DN/20090267572 US20090267572]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|10/29/09
 +
|bgcolor = "#DCE6F1"|Woodward
 +
|bgcolor = "#DCE6F1"|Current limitation for a double-fed asynchronous machine
 +
|bgcolor = "#DCE6F1"|Abnormal currents can damage the windings in the doubly- fed induction generator. Controlling these currents with the subordinate current controllers cannot be an efficient way to extract the maximum amount of active power.
 +
|bgcolor = "#DCE6F1"|The method involves delivering or receiving of a maximum permissible reference value of an active power during an operation of a double-fed asynchronous machine, where predetermined active power and reactive power reference values are limited to a calculated maximum permissible active and reactive power reference values, and hence ensures reliable regulated effect and reactive power without affecting the power adjustment, the rotor is electrically connected to a pulse-controlled inverter by slip rings with a static frequency changer, and thus a tension with variable amplitude and frequency is imposed in the rotor.
 +
|-valign="top"
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|align = "center"|4
 +
|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090008944%22.PGNR.&OS=DN/20090008944&RS=DN/20090008944 US20090008944]</u></font>
 +
|align = "center"|01/08/09
 +
|Universidad Publica De Navarra
 +
|Method and system of control of the converter of an electricity generation facility connected to an electricity network in the presence of voltage sags in said network
 +
|Double-fed asynchronous generators are very sensitive to the faults that may arise in the electricity network, such as voltage sags. During the sag conditions the current which appears in said converter may reach very high values, and may even destroy it.
 +
|During the event of a voltage sag occurring, the converter imposes a new set point current which is the result of adding to the previous set point current a new term, called demagnetizing current, It is proportional to a value of free flow of a generator stator. A difference between a value of a magnetic flow in the stator of the generator and a value of a stator flow associated to a direct component of a stator voltage is estimated. A value of a preset calculated difference is multiplied by a factor for producing the demagnetizing current.
 +
|-valign="top"
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|align = "center" bgcolor = "#DCE6F1"|5
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7355295.PN.&OS=PN/7355295&RS=PN/7355295 US7355295]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|04/08/08
 +
|bgcolor = "#DCE6F1"|Ingeteam Energy
 +
|bgcolor = "#DCE6F1"|Variable speed wind turbine having an exciter machine and a power converter not connected to the grid
 +
|bgcolor = "#DCE6F1"|a) The active switching of the semiconductors of the grid side converter injects undesirable high frequency harmonics to the grid.<br>b) The use of power electronic converters (4) connected to the grid (9) causes harmonic distortion of the network voltage.
 +
|bgcolor = "#DCE6F1"|Providing the way that power is only delivered to the grid through the stator of the doubly fed induction generator, avoiding undesired harmonic distortion. <br>Grid Flux Orientation (GFO) is used to accurately control the power injected to the grid. An advantage of this control system is that it does not depend on machine parameters, which may vary significantly, and theoretical machine models, avoiding the use of additional adjusting loops and achieving a better power quality fed into the utility grid.
 +
|-valign="top"
 +
|align = "center"|6
 +
|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080203978%22.PGNR.&OS=DN/20080203978&RS=DN/20080203978 US20080203978]</u></font>
 +
|align = "center"|08/28/08
 +
|Semikron
 +
|Frequency converter for a double-fed asynchronous generator with variable power output and method for its operation
 +
|Optislip circuit with a resistor is used when speed is above synchronous speed, results in heating the resistor and thus the generator leads to limitation of operation in super synchronous range which results in tower fluctuations.
 +
|Providing a back-to-back converter which contains the inverter circuit has direct current (DC) inputs, DC outputs, and a rotor-rectifier connected to a rotor of a dual feed asynchronous generator. A mains inverter is connected to a power grid, and an intermediate circuit connects one of the DC inputs with the DC outputs. The intermediate circuit has a semiconductor switch between the DC outputs, an intermediate circuit condenser between the DC inputs, and a diode provided between the semiconductor switch and the condenser. Thus the system is allowed for any speed of wind  and reduces the tower fluctuations.
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|7
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070210651%22.PGNR.&OS=DN/20070210651&RS=DN/20070210651 US20070210651]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|09/13/07
 +
|bgcolor = "#DCE6F1"|Hitachi
 +
|bgcolor = "#DCE6F1"|Power converter for doubly-fed power generator system
 +
|bgcolor = "#DCE6F1"|During the ground faults, excess currents is induced in the secondary windings and flows into power converter connected to secondary side and may damage the power converter. Conventional methods of increasing the capacity of the power converter increases system cost, degrade the system and takes time to activate the system to supply power again.
 +
|bgcolor = "#DCE6F1"|The generator provided with a  excitation power converter connected to secondary windings of a doubly-fed generator via impedance e.g. reactor, and a diode rectifier connected in parallel to the second windings of the doubly-fed generator via another impedance. A direct current link of the rectifier is connected in parallel to a DC link of the converter. A controller  outputs an on-command to a power semiconductor switching element of the converter if a value of current flowing in the power semiconductor switching element is a predetermined value or larger.
 +
|-valign="top"
 +
|align = "center"|8
 +
|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070132248%22.PGNR.&OS=DN/20070132248&RS=DN/20070132248 US20070132248]</u></font>
 +
|align = "center"|06/14/07
 +
|General Electric
 +
|System and method of operating double fed induction generators
 +
|Wind turbines with double fed induction generators are sensitive to grid faults. Conventional methods are not effective to reduce the shaft stress during grid faults and slow response and using dynamic voltage restorer (DVR) is cost expensive.
 +
|The protection system has a controlled impedance device. Impedance device has bidirectional semiconductors such triac, assembly of thyristors or anti-parallel thyristors. Each of the controlled impedance devices is coupled between a respective phase of a stator winding of a double fed induction generator and a respective phase of a grid side converter. The protection system also includes a controller configured for coupling and decoupling impedance in one or more of the controlled impedance devices in response to changes in utility grid voltage and a utility grid current. High impedance is offered to the grid during network faults to isolate the dual fed wind turbine generator.
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|9
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220060192390%22.PGNR.&OS=DN/20060192390&RS=DN/20060192390 US20060192390]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|08/31/06
 +
|bgcolor = "#DCE6F1"|Gamesa Innovation
 +
|bgcolor = "#DCE6F1"|Control and protection of a doubly-fed induction generator system
 +
|bgcolor = "#DCE6F1"|A short-circuit in the grid causes the generator to feed high stator-currents into the short-circuit and the rotor-currents increase very rapidly which cause damage to the power-electronic components of the converter connecting the rotor windings with the rotor-inverter.
 +
|bgcolor = "#DCE6F1"|The converter is provided with a clamping unit which is triggered from a non-operation state to an operation state, during detection of over-current in the rotor windings. The clamping unit comprises passive voltage-dependent resistor element for providing a clamping voltage over the rotor windings when the clamping unit is triggered.
 +
|-valign="top"
 +
|align = "center"|10
 +
|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220050189896%22.PGNR.&OS=DN/20050189896&RS=DN/20050189896 US20050189896]</u></font>
 +
|align = "center"|09/01/05
 +
|ABB Research
 +
|Method for controlling doubly-fed machine
 +
|Controlling the double fed machines on the basis of inverter control to implement the targets set for the machine, this model is extremely complicated and includes numerous parameters that are often to be determined.
 +
|A method is provided to use a standard scalar-controlled frequency converter for machine control. A frequency reference for the inverter with a control circuit, and reactive power reference are set for the machine. A rotor current compensation reference is set based on reactive power reference and reactive power. A scalar-controlled inverter is controlled for producing voltage for the rotor of the machine, based on the set frequency reference and rotor current compensation reference.
 
|-
 
|-
−
|align = "center" bgcolor = "#FAC090"|'''2'''
+
|}
−
|<font color="#0000FF"><u>Dr. Timothy B. Jensen</u></font>
+
Click '''[[Media:Doublyfed_induction_generator1.xls| here]]''' to view the detailed analysis sheet for doubly-fed induction generators patent analysis.
−
|1.B.S. from the University of Minnesota , Chemical Engineering<br>2.Ph.D. from Princeton University, Chemical Engineering
+
 
−
|<font color="#0000FF"><u>[http://www.pstc.org/i4a/pages/index.cfm?pageid=3472 3M Masking and Packaging Systems ]</u></font>
+
===Article Analysis===
−
|Not Available
+
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
|Business consultant for pressure sensitive adhesives (PSA).Areas of expertise and interest are:- packaging, tape products, regulatory and environmental issues, standards and specification development
+
|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S.No.'''</font>
−
|Not Available
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Title'''</font>
−
| [[Image:Jensen1.png|thumb|center|200px|[http://www.pstc.org/i4a/pages/index.cfm?pageid=3472 '''Dr. Timothy B. Jensen''']]]
+
|align = "center" bgcolor = "#4F81BD" width="105"|<font color="#FFFFFF">'''Publication Date<br>'''(mm/dd/yyyy)</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Journal/Conference'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Dolcera Summary'''</font>
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|1
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&arnumber=1709031&queryText=Study+on+the+Control+of+DFIG+and+Its+Responses+to+Grid+Disturbances&openedRefinements=*&searchField=Search+All Study on the Control of DFIG and its Responses to Grid Disturbances ]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|01/01/06
 +
|bgcolor = "#DCE6F1"|Power Engineering Society General Meeting, 2006. IEEE
 +
|bgcolor = "#DCE6F1"|Presented dynamic model of the DFIG, including mechanical model, generator model, and PWM voltage source converters. Vector control strategies adapted for both the RSC and GSC to control speed and reactive power independently. Control designing methods, such as pole-placement method and the internal model control are used. MATLAB/Simulink is used for simulation.
 +
|-valign="top"
 +
|align = "center"|2
 +
|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&arnumber=1649950&queryText=Application+of+Matrix+Converter+for+Variable+Speed+Wind+Turbine+Driving+an+Doubly+Fed+Induction+Generator&openedRefinements=*&searchField=Search+All Application of Matrix Converter for Variable Speed Wind Turbine Driving an Doubly Fed Induction Generator ]</u></font>
 +
|align = "center"|05/23/06
 +
|Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006.  
 +
|A matrix converter is replaced with back to back converter in a variable speed wind turbine using doubly fed induction generator. Stable operation is achieved by stator flux oriented control technique and the system operated in both sub and super synchronous modes, achieved good results.
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|3
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&arnumber=4778305&queryText=Optimal+Power+Control+Strategy+of+Maximizing+Wind+Energy+Tracking+and+Conversion+for+VSCF+Doubly+Fed+Induction+Generator+System&openedRefinements=*&searchField=Search+Al Optimal Power Control Strategy of Maximizing Wind Energy Tracking and Conversion for VSCF Doubly Fed Induction Generator System ]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|08/14/06
 +
|bgcolor = "#DCE6F1"|Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International
 +
|bgcolor = "#DCE6F1"|Proposed a new optimal control strategy of maximum wind power extraction strategies and testified by simulation. The control algorithm also used to minimize the losses in the generator. The dual passage excitation control strategy is applied to decouple the active and reactive powers. With this control system, the simulation results show the good robustness and high generator efficiency is achieved.
 +
|-valign="top"
 +
|align = "center"|4
 +
|<font color="#0000FF"><u>[http://docs.google.com/viewer?a=v&q=cache:HqaFsMBhchcJ:iris.elf.stuba.sk/JEEEC/data/pdf/3_108-8.pdf+A+TORQUE+TRACKING+CONTROL+ALGORITHM+FOR+DOUBLY–FED+INDUCTION+GENERATOR&hl=enπd=bl&srcid=ADGEESgbHXoAbKe4O7b5DnykDc7h_LaHwCMIhkVrGX_whx4iUuE4Mc-3Rfq1DyW_h A Torque Tracking Control algorithm for Doubly–fed Induction Generator ]</u></font>
 +
|align = "center"|01/01/08
 +
|Journal of Electrical Engineering
 +
|Proposed a torque tracking control algorithm for Doubly fed induction generator using PI controllers. It is achieved by controlling the rotor currents and using a stator voltage vector reference frame.
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|5
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&arnumber=4651578&queryText=Fault+Ride+Through+Capability+Improvement+Of+Wind+Farms+Usind+Doubly+Fed+Induciton+Generator&openedRefinements=*&searchField=Search+All Fault Ride Through Capability Improvement Of Wind Farms Using Doubly Fed Induction Generator ]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|09/04/08
 +
|bgcolor = "#DCE6F1"|Universities Power Engineering Conference, 2008. UPEC 2008. 43rd International
 +
|bgcolor = "#DCE6F1"|An active diode bridge crowbar switch presented to improve fault ride through capability of DIFG. Showed different parameters related to crowbar such a crowbar resistance, power loss, temperature and time delay for deactivation during fault.  
 
|-
 
|-
−
|align = "center" bgcolor = "#FAC090"|'''3'''
+
|}
−
|<font color="#0000FF"><u>[http://www.mantisinc.net/Contacts.html Joseph H. Groeger]</u></font>
+
Click '''[[Media:Doublyfed_induction_generators1.xls| here]]''' to view the detailed analysis sheet for doubly-fed induction generators article analysis.
−
|1.B.S. Mechanical Engineering and Materials Science,University of Connecticut<br>2.M.S Metallurgy, University of Connecticut<br>3.PhD  Materials Science<nowiki>’</nowiki> University of Connecticut
+
<br>
−
|Mantis Associates Inc.
+
 
−
|President
+
===Top Cited Patents===
−
|Industrial Consultant
+
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
|25 years
+
|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
−
| [[Image:Joseph.png|thumb|center|200px|[http://www.mantisinc.net/Contacts.html '''Joseph H. Groeger''']]]
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Patent/Publication No.'''</font>
 +
|align = "center" bgcolor = "#4F81BD" width="105"|<font color="#FFFFFF">'''Publication Date'''<br>(mm/dd/yyyy)</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Assignee/Applicant'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Title'''</font>
 +
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Citation Count'''</font>
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|1
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5289041.PN.&OS=PN/5289041&RS=PN/5289041 US5289041]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|02/22/94
 +
|bgcolor = "#DCE6F1"|US Windpower
 +
|bgcolor = "#DCE6F1"|Speed control system for a variable speed wind turbine
 +
|align = "center" bgcolor = "#DCE6F1"|80
 +
|-valign="top"
 +
|align = "center"|2
 +
|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4982147.PN.&OS=PN/4982147&RS=PN/4982147 US4982147]</u></font>
 +
|align = "center"|01/01/91
 +
|Oregon State
 +
|Power factor motor control system
 +
|align = "center"|62
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|3
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5028804.PN.&OS=PN/5028804&RS=PN/5028804 US5028804]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|07/02/91
 +
|bgcolor = "#DCE6F1"|Oregon State
 +
|bgcolor = "#DCE6F1"|Brushless doubly-fed generator control system
 +
|align = "center" bgcolor = "#DCE6F1"|51
 +
|-valign="top"
 +
|align = "center"|4
 +
|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5239251.PN.&OS=PN/5239251&RS=PN/5239251 US5239251]</u></font>
 +
|align = "center"|08/24/93
 +
|Oregon State
 +
|Brushless doubly-fed motor control system
 +
|align = "center"|49
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|5
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6856038.PN.&OS=PN/6856038&RS=PN/6856038 US6856038]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|02/15/05
 +
|bgcolor = "#DCE6F1"|Vestas Wind Systems
 +
|bgcolor = "#DCE6F1"|Variable speed wind turbine having a matrix converter
 +
|align = "center" bgcolor = "#DCE6F1"|43
 +
|-valign="top"
 +
|align = "center"|6
 +
|<font color="#0000FF"><u>[http://www.wipo.int/pctdb/en/wo.jsp?WO=1999029034 WO1999029034]</u></font>
 +
|align = "center"|06/10/99
 +
|Asea Brown
 +
|A method and a system for speed control of a rotating electrical machine with flux composed of two quantities
 +
|align = "center"|36
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|7
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.wipo.int/pctdb/en/wo.jsp?WO=1999019963 WO1999019963]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|04/22/99
 +
|bgcolor = "#DCE6F1"|Asea Brown
 +
|bgcolor = "#DCE6F1"|Rotating electric machine
 +
|align = "center" bgcolor = "#DCE6F1"|36
 +
|-valign="top"
 +
|align = "center"|8
 +
|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7015595.PN.&OS=PN/7015595&RS=PN/7015595 US7015595]</u></font>
 +
|align = "center"|03/21/06
 +
|Vestas Wind Systems
 +
|Variable speed wind turbine having a passive grid side rectifier with scalar power control and dependent pitch control
 +
|align = "center"|34
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|9
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4763058.PN.&OS=PN/4763058&RS=PN/4763058 US4763058]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|08/09/88
 +
|bgcolor = "#DCE6F1"|Siemens
 +
|bgcolor = "#DCE6F1"|Method and apparatus for determining the flux angle of rotating field machine or for position-oriented operation of the machine
 +
|align = "center" bgcolor = "#DCE6F1"|32
 +
|-valign="top"
 +
|align = "center"|10
 +
|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7095131.PN.&OS=PN/7095131&RS=PN/7095131 US7095131]</u></font>
 +
|align = "center"|08/22/06
 +
|General Electric
 +
|Variable speed wind turbine generator
 +
|align = "center"|25
 
|-
 
|-
−
|align = "center" bgcolor = "#FAC090"|'''4'''
+
|}
−
|<font color="#0000FF"><u>[http://www.barrysanel.com/BSPA/Experience_files/BarrySanelCreativeResume.pdf Barry Werner Sanel]</u></font>
+
===Top Cited Articles===
−
|1.Bachelor of Science, Computer Science/Graphic Arts<br>2.Associate of Arts, General Studies
+
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
|<font color="#0000FF"><u>[http://www.barrysanel.com/BSPA/About_Barry.html Barry Sanel Packaging Advisors]</u></font>
+
|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
−
|Independent Packaging Consultant
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Title'''</font>
−
|Experience developing packaging for food and beverage: ACL glass, aluminum can and bottle, PET, pressure-sensitive & cut-and-stack labels, paperboard, shrink sleeve, closure, bag, foil, Tetra Pak, direct and preprint corrugate
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Publication Date'''</font>
−
|17 Years
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Journal/Conference'''</font>
−
| [[Image:Barry.png|thumb|center|120px|[http://www.barrysanel.com/BSPA/About_Barry.html '''Barry Werner Sanel''']]]
+
|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Citations Count'''</font>
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|1
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?&arnumber=502360 Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|May. 1996
 +
|bgcolor = "#DCE6F1"|IEEE Proceedings Electric Power Applications
 +
|align = "center" bgcolor = "#DCE6F1"|906
 +
|-valign="top"
 +
|align = "center"|2
 +
|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?&arnumber=999610 Doubly fed induction generator systems for wind turbines]</u></font>
 +
|align = "center"|May. 2002
 +
|IEEE Industry Applications Magazine
 +
|align = "center"|508
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|3
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?&arnumber=1198317 Dynamic modeling of doubly fed induction generator wind turbines]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|May. 2003
 +
|bgcolor = "#DCE6F1"|IEEE Transactions on Power Systems
 +
|align = "center" bgcolor = "#DCE6F1"|274
 +
|-valign="top"
 +
|align = "center"|4
 +
|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1201089 Modeling and control of a wind turbine driven doubly fed induction generator]</u></font>
 +
|align = "center"|Jun. 2003
 +
|IEEE Transactions on Energy Conversion
 +
|align = "center"|271
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|5
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/iel5/60/30892/01432858.pdf?arnumber=1432858 Ride through of wind turbines with doubly-fed induction generator during a voltage dip]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|Jun. 2005
 +
|bgcolor = "#DCE6F1"|IEEE Transactions on Energy Conversion
 +
|align = "center" bgcolor = "#DCE6F1"|246
 +
|-valign="top"
 +
|align = "center"|6
 +
|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=970114 Dynamic modeling of a wind turbine with doubly fed induction generator]</u></font>
 +
|align = "center"|July. 2001
 +
|IEEE Power Engineering Society Summer Meeting, 2001
 +
|align = "center"|196
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|7
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1597345 Modeling of the wind turbine with a doubly fed induction generator for grid integration studies]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|Mar. 2006
 +
|bgcolor = "#DCE6F1"|IEEE Transactions on Energy Conversion
 +
|align = "center" bgcolor = "#DCE6F1"|174
 +
|-valign="top"
 +
|align = "center"|8
 +
|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?&arnumber=543631 A doubly fed induction generator using back-to-back PWM converters supplying an isolated load from a variable speed wind turbine]</u></font>
 +
|align = "center"|Sept. 1996
 +
|IEEE Proceedings Electric Power Applications
 +
|align = "center"|150
 +
|-valign="top"
 +
|align = "center" bgcolor = "#DCE6F1"|9
 +
|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?&arnumber=1432853 Doubly fed induction generator model for transient stability analysis]</u></font>
 +
|align = "center" bgcolor = "#DCE6F1"|Jun. 2005
 +
|bgcolor = "#DCE6F1"|IEEE Transactions on Energy Conversion
 +
|align = "center" bgcolor = "#DCE6F1"|106
 +
|-valign="top"
 +
|align = "center"|10
 +
|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1677655 Control of a doubly fed induction generator in a wind turbine during grid fault ride-through]</u></font>
 +
|align = "center"|Sept. 2006
 +
|IEEE Transactions on Energy Conversion
 +
|align = "center"|112
 
|-
 
|-
 
|}
 
|}
  
 +
===White Space Analysis===
 +
* White-space analysis provides the technology growth and gaps in the technology where further R&D can be done to gain competitive edge and to carry out incremental innovation.
 +
* Dolcera provides White Space Analysis in different  dimensions. Based on Product, Market, Method of Use, Capabilities or Application or Business Area and defines the exact categories within the dimension.
 +
* Below table shows a sample representation of white space analysis for controlling DFIG parameters with converters, based on the sample analysis.
 +
{|border="2" cellspacing="0" cellpadding="14" width="20%"
 +
| style="background-color:#4F81BD;"| <center>'''White Space of converters used to control'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Active power'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Reactive Power'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Decoupled P-Q control'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Field oriented control'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Direct torque control'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Speed control'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Frequency Control'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Pitch control'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''PWM Technique'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Low voltage ride through'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Network fault/Grid fault'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Symmetrical and Asymmetrical Faults'''</center>
 +
| style="background-color:#4F81BD;"| <center>'''Temp control'''</center>
  
−
=IP Activity=
 
−
==Top Assignees==
 
−
As can be seen, 3M leads ahead in the list with 76 patents followed by Avery Denisson with 31 patents. These players are top in the manufacture of pressure sensitive adhesive with application in food packaging
 
−
[[Image:Top Assignees.jpg|thumb|center|850px|'''Top Assignees''']]
 
−
 
−
==Top Inventors==
 
−
Huffer Scott of Sonoco Development leads the top of the chart for Top inventors with 7 patents in the field of Pressure sensitve adhesive with application in food industry
 
−
[[Image:Top Inventors.jpg|thumb|center|850px|'''Top Assignees''']]
 
−
 
−
*'''Note:''' The above values are approximate and an accurate value can be obtained after a detailed analysis of the patents obtained from the search query
 
−
 
−
=Other information on PSA=
 
−
==Recycling issues with PSA==
 
−
 
−
PSAs exact a considerable cost on the paper recycling industry, an estimated $700 million per year. Most paper recycling systems converts paper into pulp in presence of water, which is then transformed back into paper. PSAs do not dissolve in water, but rather fragment into smaller particles during the repulping process. These particles are known as stickies, get deformed under heat and pressure, making them difficult to screen or filter out of the pulp. Stickies can become lodged on papermaking and can cause damage to equipment or even in the paper.  [http://www.calrecycle.ca.gov/ReduceWaste/Business/officepaper/PSAFacts.htm Source]
 
−
 
−
{|border="2" cellspacing="0" cellpadding="4" align = "center" width="90%"
 
−
|align = "center" bgcolor = "#B8CCE4"|'''Sr. No.'''
 
−
|align = "center" bgcolor = "#B8CCE4"|'''"Sticky" PSA Product'''
 
−
|align = "center" bgcolor = "#B8CCE4"|'''Alternative Product/Procedure'''
 
 
|-
 
|-
−
|align = "right" bgcolor = "#B8CCE4"|'''1'''
+
| style="background-color:#4F81BD;"| <center>'''Grid Side active converters'''</center>
−
|align = "left"|Address Labels
+
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052394%22.PGNR.&OS=DN/20070052394&RS=DN/20070052394 US20070052394A1]
−
|align = "left"|1. Print addresses directly on envelopes<br>2. Using glassine (cellulose) film window or filmless window envelopes, and print mailing addresses directly on the letter to show through the window.<br>3. Handprint addresses directly on large mailing envelopes..
+
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220060028025%22.PGNR.&OS=DN/20060028025&RS=DN/20060028025 US20060028025A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100148508%22.PGNR.&OS=DN/20100148508&RS=DN/20100148508 US20100148508A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100133816%22.PGNR.&OS=DN/20100133816&RS=DN/20100133816 US20100133816A1]
 +
[http://v3.espacenet.com/searchResults?NUM=EP2166226A1&DB=EPODOC&submitted=true&locale=en_V3&ST=number&compact=false EP2166226A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070132248%22.PGNR.&OS=DN/20070132248&RS=DN/20070132248 US20070132248A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052394%22.PGNR.&OS=DN/20070052394&RS=DN/20070052394 US20070052394A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100096853%22.PGNR.&OS=DN/20100096853&RS=DN/20100096853 US20100096853A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100114388%22.PGNR.&OS=DN/20100114388&RS=DN/20100114388 US20100114388A1]
 +
|
 +
|
 +
| style="background-color:#ffffff;"| [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090008938%22.PGNR.&OS=DN/20090008938&RS=DN/20090008938 US20090008938A1]
 +
| style="background-color:#ffffff;"| [http://www.wipo.int/pctdb/en/wo.jsp?WO=2010079234 WO2010079234A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090230689%22.PGNR.&OS=DN/20090230689&RS=DN/20090230689 US20090230689A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090206606%22.PGNR.&OS=DN/20090206606&RS=DN/20090206606 US20090206606A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070024247%22.PGNR.&OS=DN/20070024247&RS=DN/20070024247 US20070024247A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090206606%22.PGNR.&OS=DN/20090206606&RS=DN/20090206606 US20090206606A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080129050%22.PGNR.&OS=DN/20080129050&RS=DN/20080129050 US20080129050A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100156192%22.PGNR.&OS=DN/20100156192&RS=DN/20100156192 US20100156192A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070182383%22.PGNR.&OS=DN/20070182383&RS=DN/20070182383 US20070182383A1]
 +
| style="background-color:#ffffff;"| [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100002475%22.PGNR.&OS=DN/20100002475&RS=DN/20100002475 US20100002475A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080296898%22.PGNR.&OS=DN/20080296898&RS=DN/20080296898 US20080296898A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070273155%22.PGNR.&OS=DN/20070273155&RS=DN/20070273155 US20070273155A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070278797%22.PGNR.&OS=DN/20070278797&RS=DN/20070278797 US20070278797A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052244%22.PGNR.&OS=DN/20070052244&RS=DN/20070052244 US20070052244A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070024059%22.PGNR.&OS=DN/20070024059&RS=DN/20070024059 US20070024059A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220060238929%22.PGNR.&OS=DN/20060238929&RS=DN/20060238929 US20060238929A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070177314%22.PGNR.&OS=DN/20070177314&RS=DN/20070177314 US20070177314A1]
 +
| style="background-color:#ffffff;"|[http://v3.espacenet.com/searchResults?NUM=EP2166226A1&DB=EPODOC&submitted=true&locale=en_V3&ST=number&compact=false EP2166226A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090121483%22.PGNR.&OS=DN/20090121483&RS=DN/20090121483 US20090121483A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090008938%22.PGNR.&OS=DN/20090008938&RS=DN/20090008938 US20090008938A1]
 
|-
 
|-
−
|align = "right" bgcolor = "#B8CCE4"|'''2'''
+
| style="background-color:#4F81BD;"| <center>'''Grid side passive converters'''</center>
−
|align = "left"|Sticky Notes
+
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220030151259%22.PGNR.&OS=DN/20030151259&RS=DN/20030151259 US20030151259A1]
−
|align = "left"|1.Use scratch paper for notes and secure with paper clips.
+
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220030151259%22.PGNR.&OS=DN/20030151259&RS=DN/20030151259 US20030151259A1]
−
|-
+
|
−
|align = "right" bgcolor = "#B8CCE4"|'''3'''
+
|
−
|align = "left"|Postage Stamps
+
|
−
|align = "left"|1. Use moisture-activated postage stamps<br>2. Postal meter that prints postage directly on envelopes or that uses moisture-activated meter tape
+
|
−
|-
+
|
−
|align = "right" bgcolor = "#B8CCE4"|'''4'''
+
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220030151259%22.PGNR.&OS=DN/20030151259&RS=DN/20030151259 US20030151259A1]
−
|align = "left"|File Folder Index Labels
+
|
−
|align = "left"|1. Handprint file subjects directly on index tabs, instead of using an index label. When recycling file folders with index labels, tear off the index tab.
+
|
 +
|
 +
|
 +
|
 +
 
 
|-
 
|-
−
|align = "right" bgcolor = "#B8CCE4"|'''5'''
+
| style="background-color:#4F81BD;"| <center>'''Rotor side converter'''</center>
−
|align = "left"|Closure Tabs
+
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100142237%22.PGNR.&OS=DN/20100142237&RS=DN/20100142237 US20100142237A1]
−
|align = "left"|1. Sharply folding fliers and newsletters is often sufficient to send them safely and securely through the mail.
+
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052394%22.PGNR.&OS=DN/20070052394&RS=DN/20070052394 US20070052394A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220060028025%22.PGNR.&OS=DN/20060028025&RS=DN/20060028025 US20060028025A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100096853%22.PGNR.&OS=DN/20100096853&RS=DN/20100096853 US20100096853A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100148508%22.PGNR.&OS=DN/20100148508&RS=DN/20100148508 US20100148508A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100133816%22.PGNR.&OS=DN/20100133816&RS=DN/20100133816 US20100133816A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070132248%22.PGNR.&OS=DN/20070132248&RS=DN/20070132248 US20070132248A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052394%22.PGNR.&OS=DN/20070052394&RS=DN/20070052394 US20070052394A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100114388%22.PGNR.&OS=DN/20100114388&RS=DN/20100114388 US20100114388A1]
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|
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|
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| style="background-color:#ffffff;"| [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090008938%22.PGNR.&OS=DN/20090008938&RS=DN/20090008938 US20090008938A1]
 +
| style="background-color:#ffffff;"|[http://www.wipo.int/pctdb/en/wo.jsp?WO=2010079234 WO2010079234A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090230689%22.PGNR.&OS=DN/20090230689&RS=DN/20090230689 US20090230689A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070024247%22.PGNR.&OS=DN/20070024247&RS=DN/20070024247 US20070024247A1]
 +
| style="background-color:#ffffff;"| [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080129050%22.PGNR.&OS=DN/20080129050&RS=DN/20080129050 US20080129050A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070182383%22.PGNR.&OS=DN/20070182383&RS=DN/20070182383 US20070182383A1]
 +
| style="background-color:#ffffff;"|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100002475%22.PGNR.&OS=DN/20100002475&RS=DN/20100002475 US20100002475A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080296898%22.PGNR.&OS=DN/20080296898&RS=DN/20080296898 US20080296898A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070273155%22.PGNR.&OS=DN/20070273155&RS=DN/20070273155 US20070273155A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070278797%22.PGNR.&OS=DN/20070278797&RS=DN/20070278797 US20070278797A1]
 +
| style="background-color:#ffffff;"|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080157533%22.PGNR.&OS=DN/20080157533&RS=DN/20080157533 US20080157533A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052244%22.PGNR.&OS=DN/20070052244&RS=DN/20070052244 US20070052244A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070024059%22.PGNR.&OS=DN/20070024059&RS=DN/20070024059 US20070024059A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220060238929%22.PGNR.&OS=DN/20060238929&RS=DN/20060238929 US20060238929A1]
 +
| style="background-color:#ffffff;"|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090273185%22.PGNR.&OS=DN/20090273185&RS=DN/20090273185 US20090273185A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070177314%22.PGNR.&OS=DN/20070177314&RS=DN/20070177314 US20070177314A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090121483%22.PGNR.&OS=DN/20090121483&RS=DN/20090121483 US20090121483A1]
 +
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090008938%22.PGNR.&OS=DN/20090008938&RS=DN/20090008938 US20090008938A1]
 
|-
 
|-
 +
| style="background-color:#4F81BD;"| <center>'''Matrix converters'''</center>
 +
|
 +
| style="background-color:#ffffff;"| [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220020079706%22.PGNR.&OS=DN/20020079706&RS=DN/20020079706 US20020079706A1]
 +
|
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070216164%22.PGNR.&OS=DN/20070216164&RS=DN/20070216164 US20070216164A1]
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090265040%22.PGNR.&OS=DN/20090265040&RS=DN/20090265040 US20090265040A1]
 +
|
 +
|
 +
|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070216164%22.PGNR.&OS=DN/20070216164&RS=DN/20070216164 US20070216164A1]
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|}
 
|}
  
 +
== Dolcera Dashboard ==
 +
[[Image:dashboard_features.png|center|750px|]]
  
−
==FDA regulations on use of adhesives in food packaging==
+
'''Dashboard Link'''<br>
−
===Regulation===
+
{|border="2" cellspacing="0" cellpadding="4" width="100%"
−
'''''FDA compliance:'' ''' The adhesive will be applied to food packaging, it must be compliant with USA FDA CFR 21 Section 175.105. This regulation also applies to prerssure sensitive adhesives(PSA).
+
|'''[http://client.dolcera.com/dashboard/dashboard.html?workfile_id=825 Doubly Fed Induction Generator - Dashboard] '''
 +
|width="100"|[[Image:dashboard_thumb.png|center|100px|]]
 +
|-
 +
|}
 +
*Flash Player is essential to view the Dolcera dashboard
  
−
===Section 175.105===
 
  
−
'''(a)''' '''Adhesives may be safely used as components of articles intended for use in packaging, transporting, or holding food in accordance with the following prescribed conditions:'''
 
  
−
(1) The adhesive is prepared from one or more of the optional substances named in paragraph (c) of this section, subject to any prescribed limitations.
+
==Key Findings==
 +
=== Major Players ===
 +
* [http://www.vestas.com/ Vestas Wind Energy Systems] and [http://www.ge.com/ General Electric] are the major players in wind energy generation technology.
 +
[[Image:Wind_Major_Players.png|center|thumb|700px|'''Major Players''']]
  
−
(2) The adhesive is either separated from the food by a functional barrier or used subject to the following additional limitations:
+
=== Key Patents ===
−
*''In dry foods::'' The quantity of adhesive that contacts packaged dry food shall not exceed the limits of good manufacturing practice.
+
* The key patents in the field are held by [http://www.windpoweringamerica.gov/wind_installed_capacity.asp US Windpower], [http://www.oregon.gov/ENERGY/RENEW/Wind/windhome.shtml Oregon State] and [http://www.vestas.com/ Vestas Wind Energy Systems].
  
−
*''In fatty and aqueous foods::'' (''i'' ) The quantity of adhesive that contacts packaged fatty and aqueous foods shall not exceed the trace amount at seams and at the edge exposure between packaging laminates that may occur within the limits of good manufacturing practice.
+
[[Image:wind_top_cited.png|center|thumb|700px|'''Key Patents''']]
  
−
(''ii'' ) Under normal conditions of use the packaging seams or laminates will remain firmly bonded without visible separation.
+
=== IP Activity ===
 +
* Patenting activity has seen a very high growth rate in the last two years.
 +
[[Image:ind_pat_act_3.png|center|thumb|700px|'''Year wise IP Activity''']]
  
−
'''(b)''' '''To assure safe usage of adhesives, the label of the finished adhesive container shall bear the statement "food-packaging adhesive".'''
+
=== Geographical Activity ===
 +
* USA, China, Germany, Spain, and India are very active in wind energy research.
 +
[[Image:wind_geographical_act.png|center|thumb|700px|'''Geographical Activity''']]
  
−
'''(c)''' '''Subject to any limitation prescribed in this section and in any other regulation promulgated under section 409 of the Act which prescribes safe conditions of use for substances that may be employed as constituents of adhesives, the optional substances used in the formulation of adhesives may include the following:
+
=== Research Trend ===
−
'''
+
* Around 86% patents are on controlling the doubly-fed induction generation(DFIG) which indicates high research activity going on in rating and controlling of the DFIG systems.
−
(1) Substances generally recognized as safe for use in food or food packaging.
+
  
−
(2) Substances permitted for use in adhesives by prior sanction or approval and employed under the specific conditions of use prescribed by such sanction or approval.
+
=== Issues in the Technology ===
 +
* 86% of the patent on DFIG operation are focusing on grid connected mode of operation, suggesting continuous operation of the DFIG system during weak and storm winds, grid voltage sags, and grid faults are major issues in the current scenario.
  
−
(3) Flavoring substances permitted for use in food by regulations in this part, provided that such flavoring substances are volatilized from the adhesives during the packaging fabrication process.
+
[[Image:Windenergyanalysis.jpg|center|1200px|thumb|'''Problem Solution Mapping''']]
  
−
(4) Color additives approved for use in food.
+
=== Emerging Player ===
 +
* [http://www.woodward.com/ Woodward] is a new and fast developing player in the field of DFIG technology. The company filed 10 patent applications in the field in year 2010, while it has no prior IP activity.
  
−
(5) Substances permitted for use in adhesives by other regulations in this subchapter and substances named in this subparagraph:''Provided, however,'' That any substance named in this paragraph and covered by a specific regulation in this subchapter, must meet any specifications in such regulation.
+
=<span style="color:#C41E3A">Like this report?</span>=
 +
<p align="center"> '''This is only a sample report with brief analysis''' <br>
 +
'''Dolcera can provide a comprehensive report customized to your needs'''</p>
 +
{|border="2" cellspacing="0" cellpadding="4" align="center" "
 +
|style="background:lightgrey" align = "center"  colspan = "3"|'''[mailto:info@dolcera.com <span style="color:#0047AB">Buy the customized report from Dolcera</span>]'''
 +
|-
 +
| align = "center"| [http://www.dolcera.com/website_prod/services/ip-patent-analytics-services Patent Analytics Services]
 +
|align = "center"| [http://www.dolcera.com/website_prod/services/business-research-services Market Research Services]
 +
|align = "center"| [http://www.dolcera.com/website_prod/tools/patent-dashboard Purchase Patent Dashboard]
 +
|-
 +
|align = "center"| [http://www.dolcera.com/website_prod/services/ip-patent-analytics-services/patent-search/patent-landscapes Patent Landscape Services]
 +
|align = "center"| [http://www.dolcera.com/website_prod/research-processes Dolcera Processes]
 +
|align = "center"| [http://www.dolcera.com/website_prod/industries Industry Focus]
 +
|-
 +
|align = "center"| [http://www.dolcera.com/website_prod/services/ip-patent-analytics-services/patent-search/patent-landscapes Patent Search Services]
 +
|align = "center"| [http://www.dolcera.com/website_prod/services/ip-patent-analytics-services/alerts-and-updates Patent Alerting Services]
 +
|align = "center"| [http://www.dolcera.com/website_prod/tools Dolcera Tools]
 +
|-
 +
|}
 +
<br>
 +
=References =
 +
{|border="0" cellspacing="0" cellpadding="4" width="100%"
 +
|-valign="top"
 +
|'''Background References'''
 +
# [http://www.brighthub.com/environment/renewable-energy/articles/71440.aspx Wind Energy History]
 +
# [[Media:windenergy.pdf| Wind Energy]]
 +
# [http://windeis.anl.gov/guide/basics/index.cfm Wind Energy Basics]
 +
# [http://www1.eere.energy.gov/windandhydro/wind_how.html#inside How Wind Turbines Work]
 +
# [http://www.windpowertv.com/forum/index.php?topic=18.0 Different types of wind turbines]
 +
# [http://www.house-energy.com/Wind/Offshore-Onshore.htm Onshore Vs Offshore Wind Turbines]
 +
# [http://library.thinkquest.org/06aug/01335/wind%20Power.htm Wind Power]
 +
# [http://www.ehow.com/list_5938067_types-wind-farms-there_.html Types of Wind Farms]
 +
# [http://www.offshorewindenergy.org/ca-owee/indexpages/Offshore_technology.php?file=offtech_p2.php Offshore Technology]
 +
# [http://windsine.org/?act=spage&f=wind The Fundamentals of Wind Energy]
 +
# [http://windertower.com/ Winder Tower]
 +
# [http://www.thesolarguide.com/wind-power/wind-towers.aspx Wind Towers]
 +
# [http://guidedtour.windpower.org/en/tour/design/concepts.htm Wind Turbine Blades]
 +
# [http://www.wind-energy-the-facts.org/en/part-i-technology/chapter-3-wind-turbine-technology/evolution-of-commercial-wind-turbine-technology/design-styles.html Wind Turbine Design Styles]
 +
# [http://www.awewind.com/Products/TurbineConstruction/MainAssembly/RotorHub/tabid/81/Default.aspx Rotor Hub Assembly]
 +
# [http://www.gears-gearbox.com/wind-turbines.html Gearbox for Wind Turbines]
 +
# [http://guidedtour.windpower.org/en/tour/wtrb/yaw.htm The Wind Turbine Yaw Mechanism]
 +
# [http://guidedtour.windpower.org/en/tour/wtrb/yaw.htm The Wind Turbine Yaw Mechanism]
 +
# [[Media:windturbinegenerators.pdf| Wind Turbine Generators]]
 +
# [http://www.uni-hildesheim.de/~irwin/inside_wind_turbines.html Inside wind turbines]
 +
|'''Image References'''
 +
# [http://www.windsimulators.co.uk/DFIG.htm DFIG Working Principle]
 +
# [http://www.wwindea.org/home/index.php  Country share of total capacity]
 +
# [http://www.atlantissolar.com/wind_story.html Wind turbine principle]
 +
# [http://www.windturbinesnow.com/horizontalaxis-windturbines.htm Horizontal axis wind turbine]
 +
# [http://www.solarpowerwindenergy.org/2009/12/25/types-of-wind-turbines/ Vertical axis wind turbine]
 +
# [http://zone.ni.com/devzone/cda/tut/p/id/8189 Pitch control]
 +
# [http://zone.ni.com/devzone/cda/tut/p/id/8189 Yaw control]
 +
# [http://www.eco-trees.org/europes-biggest-onshore-wind-farm-goes-online/ Onshore Wind turbines]
 +
# [http://www.house-energy.com/Wind/Offshore-Onshore.htm Offshore wind turbines]
 +
# [http://www.solarpowerwindenergy.org/2010/04/02/parts-of-a-wind-turbine/ Wind turbine parts]
 +
# [http://www.windsolarenergy.org/map-of-best-locations-for-wind-power.htm Tower height Vs Power output]
 +
# [http://americanrenewableenergycorp.com/towers Tubular tower]
 +
# [http://www.mywindpowersystem.com/2010/03/wind-power-stats-quiet-critics/ Lattice tower]
 +
# [http://itgiproducts.com/energy/windTowers.asp Guy tower]
 +
# [http://itgiproducts.com/energy/windTowers.asp Tiltup tower]
 +
# [http://itgiproducts.com/energy/windTowers.asp Free stand tower]
 +
# [http://www.wind-energy-the-facts.org/en/part-i-technology/chapter-3-wind-turbine-technology/evolution-of-commercial-wind-turbine-technology/design-styles.html Single blade turbine]
 +
# [http://www.trendir.com/green/?start=15 Two blade turbine]
 +
# [http://www.china-windturbine.com/wind-turbines-blades.htm Three blade turbine]
 +
# [http://windturbinesforthehome.com/ Internal nacelle structure]
 +
# [http://syigroup.en.made-in-china.com/product/dbTQyzJOHYRi/China-Iron-Casting-Wind-Mill-Tower-Rotor-Hub.html Rotor hub]
 +
# [http://jiangyinzkforging.en.made-in-china.com/product/hewxIQjbgTpr/China-Wind-Turbine-Shaft-For-Wind-Power-Generator-ALIM2143-.html Shaft system]
 +
# [http://machinedesign.com/article/green-technology-inside-an-advanced-wind-turbine-0605 Gear box]
 +
# [http://www1.eere.energy.gov/windandhydro/wind_how.html Anemometer & Wind vane]
  
−
* '''Note:'''Please find the complete regulation for use of FDA for food packaging '''[http://dolcera.com/upload/files/FDA_PSA_regulation.html here]'''
+
|-
 +
|}
  
 +
=Contact Dolcera=
  
−
=Downloads=
+
{| style="border:1px solid #AAA; background:#E9E9E9" align="center"
−
[[Media:PSA_Sheets.xls|'''Click''']] to download the analysis spreadsheets in excel format.
+
|-
−
 
+
! style="background:lightgrey" | Samir Raiyani
−
=References=
+
|-
−
[http://adhesives-sealants.evonik.com/product/adhesives-sealants/en/markets/packaging/pressure-sensitive-adhesives/pages/default.aspx Pressure sensitive adhesives - PSA]<br />
+
| '''Email''': [mailto:info@dolcera.com info@dolcera.com]
−
[http://dolcera.com/wiki/index.php?title=Pressure_sensitive_adhesives Dolcera sample report - PSA]<br />
+
|-
−
[http://www.levera.biz/downloads/future_trends_of_psa_label_applications_and_technologies.pdf Futures of Pressure Sensitive Adhesive Technologies & Applications]<br />
+
| '''Phone''': +1-650-269-7952
−
[http://www.onesourcetapes.com/?page_id=123 Pressure Sensitive Adhesive]
+
|}

Revision as of 02:08, 20 June 2011

This report presents a brief introduction to wind energy and technologies available for horizontal wind turbines. A detailed taxonomy for horizontal axis wind turbines is presented covering parts of the turbine, control systems, applications among others. A detailed landscape analysis of patent and non-patent literature is done with a focus on Doubly-fed Induction Generators (DFIG) used in the horizontal axis wind turbines for efficient power generation. The product information of major players in the market is also captured for Doubly-fed Induction Generators. The final section of the report covers the existing and future market predictions for wind energy-based power generation.

Process Flow


Introduction

  • We have been using wind power at least since 5000 BC to propel sailboats and sailing ships, and architects have used wind-driven natural ventilation in buildings since similarly ancient times. The use of wind to provide mechanical power came later.
  • Harnessing renewable alternative energy is the ideal way to tackle the energy crisis, with due consideration given to environmental pollution, that looms large over the world.
  • Renewable energy is also called "clean energy" or "green power" because it doesn’t pollute the air or the water. Wind energy is one such renewable energy source that harnesses natural wind power.

Read More?

Click on Wind Energy Background to read more about wind energy.

In order to overcome the problems associated with fixed speed wind turbine system and to maximize the wind energy capture, many new wind farms are employing variable speed wind energy conversion systems (WECS) with doubly-fed induction generator (DFIG). It is the most popular and widely used scheme for the wind generators due to its advantages.

For variable-speed systems with limited variable-speed range, e.g. ±30% of synchronous speed, the doubly-fed induction generator(DFIG) can be an interesting solution. This is mainly due to the fact that the power electronic converter only has to handle a fraction (20-30%) of the total power as the converters are connected to the rotor and not to the stator. Therefore, the losses in the power electronic converter can be reduced, compared to a system where the converter has to handle the total power. The overall structure of wind power generation through DFIG as shown in the figure below.

Market Research

The History of Wind Energy

To read about the History of Wind Energy, click here

Global Wind Energy Market

Market Overview

  • In the year 2010, the wind capacity reached worldwide 196’630 Megawatt, after 159’050 MW in 2009, 120’903 MW in 2008, and 93’930 MW in 2007.
Source: World Wind Energy Report, 2010
  • Wind power showed a growth rate of 23.6 %, the lowest growth since 2004 and the second lowest growth of the past decade.
  • For the first time in more than two decades, the market for new wind turbines was smaller than in the previous year and reached an overall size of 37’642 MW, after 38'312 MW in 2009.
Source: World Wind Energy Report, 2010
  • All wind turbines installed by the end of 2010 worldwide can generate 430 Tera watt hours per annum, more than the total electricity demand of the United Kingdom, the sixth largest economy of the world, and equaling 2.5 % of the global electricity consumption.
  • In the year 2010, altogether 83 countries, one more than in 2009, used wind energy for electricity generation. 52 countries increased their total installed capacity, after 49 in the previous year.
  • The turnover of the wind sector worldwide reached 40 billion Euros (55 billion US$) in 2010, after 50 billion Euros (70 billion US$) in the year 2009. The decrease is due to lower prices for wind turbines and a shift towards China.
  • China became number one in total installed capacity and the center of the international wind industry, and added 18’928 Megawatt within one year, accounting for more than 50 % of the world market for new wind turbines.
  • The wind sector in 2010 employed 670’000 persons worldwide.
  • Nuclear disaster in Japan and oil spill in Gulf of Mexico will have long-term impact on the prospects of wind energy. Governments need to urgently reinforce their wind energy policies.
  • WWEA sees a global capacity of 600’000 Megawatt as possible by the year 2015 and more than 1’500’000 Megawatt by the year 2020.

Source: World Wind Energy Report, 2010

Global Market Forecast

  • Global Wind Energy Outlook 2010, provides forecast under three different scenarios - Reference, Moderate and Advanced.
  • The Global Cumulative Wind Power Capacity is estimated to reach 572,733 MW by the year 2030, under the Reference Scenario
  • The Global Cumulative Wind Power Capacity is estimated to reach 1,777,550 MW by the year 2030, under the Moderate Scenario
  • The Global Cumulative Wind Power Capacity is estimated to reach 2,341,984 MW by the year 2030, under the Advanced Scenario
  • The following chart shows the Global Cumulative Wind Power Capacity Forecast,under the different scenarios:
Global Cumulative Wind Power Capacity Forecast, Source: Global Wind Energy Outlook 2010


Source: Global Wind Energy Outlook 2010

Market Growth Rates

  • The growth rate is the relation between the new installed wind power capacity and the installed capacity of the previous year.
  • With 23.6 %, the year 2010 showed the second lowest growth rate of the last decade.
World Market Growth Rates, Source: World Wind Energy Report, 2010
  • Before 2010, the annual growth rate had continued to increase since the year 2004, peaking in 2009 at 31.7%, the highest rate since 2001.
  • The highest growth rates of the year 2010 by country can be found in Romania, which increased its capacity by 40 times.
  • The second country with a growth rate of more than 100 % was Bulgaria (112%).
  • In the year 2009, four major wind markets had more than doubled their wind capacity: China, Mexico, Turkey, and Morocco.
  • Next to China, strong growth could be found mainly in Eastern European and South Eastern European countries: Romania, Bulgaria, Turkey, Lithuania, Poland, Hungary, Croatia and Cyprus, and Belgium.
  • Africa (with the exception of Egypt and Morocco) and Latin America (with the exception of Brazil), are again lagging behind the rest of the world in the commercial use of wind power.
  • The Top 10 countries by Growth Rate are shown in the figure listed below (only markets bigger than 200 MW have been considered):
Top Countries by Market Growth Rates, Source: World Wind Energy Report, 2010

Geographical Market Distribution

  • China became number one in total installed capacity and the center of the international wind industry, and added 18'928 Megawatt within one year, accounting for more than 50 % of the world market for new wind turbines.
  • Major decrease in new installations can be observed in North America and the USA lost its number one position in total capacity to China.
  • Many Western European countries are showing stagnation, whereas there is strong growth in a number of Eastern European countries.
  • Germany keeps its number one position in Europe with 27'215 Megawatt, followed by Spain with 20'676 Megawatt.
  • The highest shares of wind power can be found in three European countries: Denmark (21.0%), Portugal (18.0 %) and Spain (16.0%).
  • Asia accounted for the largest share of new installations (54.6%), followed by Europe (27.0%) and North America (16.7 %).
  • Latin America (1.2%) and Africa (0.4%) still played only a marginal role in new installations.
  • Africa: North Africa represents still lion share of installed capacity, wind energy plays hardly a role yet in Sub-Sahara Africa.
  • Nuclear disaster in Japan and oil spill in Gulf of Mexico will have long-term impact on the prospects of wind energy. Governments need to urgently reinforce their wind energy policies.

Source: World Wind Energy Report, 2010

The regional breakdowns for the period 2009-2030 has been provided for the following three scenarios:

  1. Regional Breakdown: Reference scenario (GWEO 2010)
  2. Regional Breakdown: Moderate scenario (GWEO 2010)
  3. Regional Breakdown: Advanced scenario (GWEO 2010)

Note: To know more about the Forecast Scenarios click here

Country-wise Market Distribution

  • In 2010, the Chinese wind market represented more than half of the world market for new wind turbines adding 18.9 GW, which equals a market share of 50.3%.
  • A sharp decrease in new capacity happened in the USA whose share in new wind turbines fell down to 14.9% (5.6 GW), after 25.9% or 9.9 GW in

the year 2009.

  • Nine further countries could be seen as major markets, with turbine sales in a range between 0.5 and 1.5 GW: Germany, Spain, India, United

Kingdom, France, Italy, Canada, Sweden and the Eastern European newcomer Romania.

  • Further, 12 markets for new turbines had a medium size between 100 and 500 MW: Turkey, Poland, Portugal, Belgium, Brazil, Denmark, Japan, Bulgaria, Greece, Egypt, Ireland, and Mexico.
  • By end of 2010, 20 countries had installations of more than 1 000 MW, compared with 17 countries by end of 2009 and 11 countries byend of 2005.
  • Worldwide, 39 countries had wind farms with a capacity of 100 Megawatt or more installed, compared with 35 countries one year ago, and 24 countries five years ago.
  • The top five countries (USA, China, Germany, Spain and India) represented 74.2% of the worldwide wind capacity, significantly more than 72.9 % in the year.
  • The USA and China together represented 43.2% of the global wind capacity (up from 38.4 % in 2009).
  • The newcomer on the list of countries using wind power commercially is a Mediterranean country, Cyprus, which for the first time installed a larger grid-connected wind farm, with 82 MW.

Source: World Wind Energy Report, 2010

The top 10 countries by Total Installed Capacity for the year 2010, is illustrated in the chart below:

Top Countries by Market Growth Rates, Source: World Wind Energy Report, 2010

To view the Top 10 countries by different other parameters for the year 2010, click on the links below:

  1. Top 10 countries by Total New Installed Capacity
  2. Top 10 countries by Capacity per Capita (kW/cap)
  3. Top 10 countries by Capacity per Land Area (kW/sq. km)
  4. Top 10 countries by Capacity per GDP (kW/ million USD)

To view the Country-wise Installed Wind Power Capacity (MW) 2002-2010 (Source: World Wind Energy Association), click here

Country Profiles

China


Wind Energy Outlook for China - 2011 & Beyond
Despite its rapid and seemingly unhampered expansion, the Chinese wind power sector continues to face significant challenges, including issues surrounding grid access and integration, reliability of turbines and a coherent strategy for developing China’s offshore wind resource. These issues will be prominent during discussions around the twelfth Five-Year Plan, which will be passed in March 2011. According to the draft plan, this is expected to reflect the Chinese government’s continuous and reinforced commitment to wind power development, with national wind energy targets of 90 GW for 2015 and 200 GW for 2020.

For a detailed country profile of China please visit this China Wind Energy Profile Link

India


Wind Energy Main market developments in 2010
Today the Indian market is emerging as one of the major manufacturing hubs for wind turbines in Asia. Currently, seventeen manufacturers have an annual production capacity of 7,500 MW. According to the WISE, the annual wind turbine manufacturing capacity in India is likely to exceed 17,000 MW by 2013.
The Indian market is expanding with the leading wind companies like Suzlon, Vestas, Enercon, RRB Energy and GE now being joined by new entrants like Gamesa, Siemens, and WinWinD, all vying for a greater market share. Suzlon, however, is still the market leader with a market share of over 50%.
The Indian wind industry has not been significantly affected by the financial and economic crises. Even in the face of a global slowdown, the Indian annual wind power market has grown by almost 68%. However, it needs to be pointed out that the strong growth in 2010 might have been stimulated by developers taking advantage of the accelerated depreciation before this option is phased out.

For a detailed country profile of India please visit this India Wind Energy Profile Link

Market Share Analysis

Global Market Share

  • Vestas leads the Global Market in the 2010 with a 12% market share according to Make Consulting, while BTM Consulting reports it to have a 14.8% market share.
  • According to Make Consulting, the global market share of Vestas has decreased from 19% in 2008, to 14.5% in 2009, to 12% in 2010.
  • According to BTM Consulting, the global market share of Vestas has changed from 19% in 2008, to 12% in 2009, to 14.8% in 2010.
  • According to Make Consulting, the global market share of GE Energy has decreased from 18% in 2008, to 12.5% in 2009, to 10% in 2010.
  • The market share of world no. 2 Sinovel, has been constantly increasing, from 5% in 2008 , to 9.3% in 2009, to 11% in 2010
  • The top 5 companies have been occupying more than half of the Global Market Share from 2008 to 2010

Source: Make Consulting, BTM Global Consulting

The chart given below illustrates the Global Market Share Comparison of Major Wind Energy Companies for the period 2008-2010, as provided by two different agencies, Make Consulting and BTM Consulting:

Global Market Share Comparison of Major Companies for the period 2008-2010 , Source: Make Consulting, BTM Global Consulting

Market Share - Top 10 Markets

  • While Vestas is the Global Leader, it is the leader in only one of Top 10 markets, which is 10th placed Sweden
  • But, Vestas is ranked 2nd in 5 of Top 10 markets
  • Sinovel, ranked 2nd globally, features only once in the Top 3 Companies list in the Top 10 markets, but scores globally because it leads the largest market China
  • The table given below illustrates the Top 3 players in Top 10 Wind Energy Markets of the world:
Market MW No. 1 No. 2 No. 3
China 18928 Sinovel Goldwind Dongfang
USA 5115 GE Energy Vestas Siemens
India 2139 Suzlon Enercon Vestas
Germany 1551 Enercon Vestas Suzlon
UK 1522 Siemens Vestas Gamesa
Spain 1516 Gamesa Vestas GE Energy
France 1186 Enercon Suzlon Vestas
Italy 948 Gamesa Vestas Suzlon
Canada 690 Siemens GE Energy Enercon
Sweeden 604 Vestas Enercon Siemens
Source: BTM Consult - part of Navigant Consulting - March 2011

Source: BTM Consult

Company Profiles

  1. Vestas Wind Systems A/S
  2. Suzlon Energy

Major Wind Turbine Suppliers

Turbine maker Rotor blades Gear boxes Generators Towers Controllers
Vestas Vestas, LM Bosch Rexroth, Hansen, Wingery, Moventas Weier, Elin, ABB, LeroySomer Vestas, NEG, DMI Cotas (Vestas),
NEG (Dancontrol)
GE energy LM, Tecsis Wingery, Bosch, Rexroth, Eickhoff, GE Loher, GE DMI, Omnical, SIAG GE
Gamesa Gamesa, LM Echesa (Gamesa), Winergy, Hansen Indar (Gamesa), Cantarey Gamesa Ingelectric (Gamesa)
Enercon Enercon Direct drive Enercon KGW, SAM Enercon
Siemens
wind 		Siemens, LM Winergy ABB Roug, KGW Siemens, KK Electronic
Suzlon Suzlon Hansen, Winergy Suzlon,
Siemens 		Suzlon Suzlon, Mita Teknik
Repower LM Winergy, Renk, Eickhoff N/A N/A Mita Teknik, ReGuard
Nordex Nordex Winergy, Eickhoff, Maag Loher Nordex, Omnical Nordex, Mita Teknik
Source: BTM Consult

Products of Top Companies

S.No. Company Product Specifications
1 Vestas V80 Rated Power: 2.0 MW, Frequency: 50 Hz/60 Hz, Number of Poles: 4-pole, Operating Temperature: -30°C to 40°
2 Vestas V90 Rated Power: 1.8/2.0 MW, Frequency : 50 Hz/60 Hz, Number of Poles : 4-pole(50 Hz)/6-pole(60 Hz), Operating Temperature: -30°C to 40°
3 Vestas V90 Offshore Rated Power: 3.0 MW, Frequency: 50 Hz/60 Hz, Number of Poles: 4-pole, Operating Temperature: -30°C to 40°
4 North Heavy Company 2 MW DFIG Rated Power: 2.0 MW, Rated Voltage: 690V, Rated Current: 1670A, Frequency: 50Hz, Number of Poles : 4-pole, Rotor Rated Voltage: 1840V, Rotor Rated Current 670A, Rated Speed: 1660rpm; Power Speed Range: 520-1950 rpm, Insulation Class: H, Protection Class: IP54, Motor Temperature Rise =<95K
5 Gamesa G90 Rated Voltage: 690 V, Frequency: 50 Hz, Number of Poles: 4, Rotational Speed: 900:1,900 rpm (rated 1,680 rpm) (50Hz); Rated Stator Current: 1,500 A @ 690 V, Protection Class: IP 54, Power Factor(standard): 0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, Power Factor(Optional): 0.95 CAP - 0.95 IND throughout the power range
6 Nordex N80 Rated Power: 2.5 MW, Rated Voltage: 690V, Frequency: 50/60Hz, Cooling Systems: liquid/air
7 Nordex N90 Rated Power: 2.5 MW, Rated Voltage: 690V, Frequency: 50/60Hz, Cooling Systems: liquid/air
8 Nordex N100 Rated Power: 2.4 MW, Rated Voltage: 690V, Frequency: 50/60Hz, Cooling Systems: liquid/air
9 Nordex N117 Rated Power: 2.5 MW, Rated Voltage: 690V, Frequency: 50/60Hz, Cooling Systems: liquid/air
10 Converteam DFIG NA
11 Xian Geoho Energy Technology 1.5MW DFIG Rated Power: 1550KW, Rated Voltage: 690V, Rated Speed: 1755 r/min, Speed Range: 975~1970 r/min, Number of Poles: 4-pole, Stator Rated Voltage: 690V±10%, Stator Rated Current: 1115A; Rotor Rated Voltage: 320V, Rotor Rated Current: 430A, Winding Connection: Y / Y, Power Factor: 0.95(Lead) ~ 0.95Lag, Protection Class: IP54, Insulation Class: H, Work Mode: S1, Installation ModeI: M B3, Cooling Mode: Air cooling, Weight: 6950kg
12 Tecowestinghouse TW450XX (0.5-1 KW) Rated Power: 0.5 -1 KW, Rated Voltage: 460/ 575/ 690 V, Frequency: 50/ 60 Hz, Number of Poles: 4/6, Ambient Temp.(°C): -40 to 50, Speed Range (% of Synch. Speed): 68% to 134%, Power Factor (Leading): -0.90 to +0.90 , Insulation Class: H/F, Efficiency: >= 96%
13 Tecowestinghouse TW500XX (1-2 KW) Rated Power: 1-2 kW, Rated Voltage: 460/ 575/ 690 V, Frequency: 50/ 60 Hz, Number of Poles: 4/6, Ambient Temp.(°C): -40 to 50; Speed Range (% of Synch. Speed): 68 to 134%, Power Factor(Leading): -0.90 to +0.90, Insulation Class: H/F, Efficiency: >= 96%
14 Tecowestinghouse TW560XX (2-3 KW) Rated Power: 2-3kW, Rated Voltage: 460/ 575/ 690 V, Frequency: 50/ 60 Hz, Number of Poles: 4/6, Ambient Temp(°C): -40 to 50, Speed Range(% of Synch. Speed): 68 to 134%, Power Factor(Leading): -0.90 to +0.90, Insulation Class: H/F, Efficiency: >= 96%.
15 Acciona AW1500 Rated Power: 1.5MW, Rated Voltage: 690 V, Frequency: 50 Hz, Number of Poles: 4, Rotational Speed: 900:1,900 rpm(rated 1,680 rpm) (50Hz), Rated Stator Current: 1,500 A @ 690 V, Protection Class: IP54, Power Factor(standard): 0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, Power factor(optional): 0.95 CAP - 0.95 IND throughout the power range
16 Acciona AW3000 Rated Power: 3.0MW, Rated Voltage: 690 V, Frequency: 50 Hz, Number of Poles: 4, Rotational Speed: 900:1,900 rpm(rated 1,680 rpm) (50Hz), Rated Stator Current: 1,500 A @ 690 V, Protection Class: IP54, Power Factor(standard): 0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, Power Factor (optional): 0.95 CAP - 0.95 IND throughout the power range
17 General Electric GE 1.5/2.5MW Rated Power: 1.5/2.5 MW, Frequency(Hz): 50/60

IP Search & Analysis

Doubly-fed Induction Generator: Search Strategy

The present study on the IP activity in the area of horizontal axis wind turbines with focus on Doubly-fed Induction Generator (DFIG) is based on a search conducted on Thomson Innovation.

Control Patents

S. No. Patent/Publication No. Publication Date
(mm/dd/yyyy) 		Assignee/Applicant Title
1 US6278211 08/02/01 Sweo Edwin Brush-less doubly-fed induction machines employing dual cage rotors
2 US6954004 10/11/05 Spellman High Voltage Electron Doubly fed induction machine
3 US7411309 08/12/08 Xantrex Technology Control system for doubly fed induction generator
4 US7485980 02/03/09 Hitachi Power converter for doubly-fed power generator system
5 US7800243 09/21/10 Vestas Wind Systems Variable speed wind turbine with doubly-fed induction generator compensated for varying rotor speed
6 US7830127 11/09/10 Wind to Power System Doubly-controlled asynchronous generator

Patent Classes

S. No. Class No. Class Type Definition
1 F03D9/00 IPC Machines or engines for liquids; wind, spring, or weight motors; producing mechanical power or a reactive propulsive thrust, not otherwise provided for / Wind motors / Adaptations of wind motors for special use; Combination of wind motors with apparatus driven thereby (aspects predominantly concerning driven apparatus)
2 F03D9/00C ECLA Machines or engines for liquids; wind, spring, or weight motors; producing mechanical power or a reactive propulsive thrust, not otherwise provided for / Wind motors / Adaptations of wind motors for special use; Combination of wind motors with apparatus driven thereby (aspects predominantly concerning driven apparatus) / The apparatus being an electrical generator
3 H02J3/38 IPC Generation, conversion, or distribution of electric power / Circuit arrangements or systems for supplying or distributing electric power; systems for storing electric energy / Circuit arrangements for ac mains or ac distribution networks / Arrangements for parallely feeding a single network by two or more generators, converters or transformers
4 H02K17/42

IPC Generation, conversion, or distribution of electric power / Dynamo-electric machines / Asynchronous induction motors; Asynchronous induction generators / Asynchronous induction generators
5 H02P9/00 IPC Generation, conversion, or distribution of electric power / Control or regulation of electric motors, generators, or dynamo-electric converters; controlling transformers, reactors or choke coils / Arrangements for controlling electric generators for the purpose of obtaining a desired output
6 290/044 USPC Prime-mover dynamo plants / electric control / Fluid-current motors / Wind
7 290/055 USPC Prime-mover dynamo plants / Fluid-current motors / Wind
8 318/727 USPC Electricity: motive power systems / Induction motor systems
9 322/047 USPC Electricity: single generator systems / Generator control / Induction generator

Concept Table

S. No. Concept 1 Concept 2 Concept 3
Doubly Fed Induction Generator
1 doubly fed induction generator
2 double output asynchronous machines
3 dual fed systems
4 dual feed
5 dual output

Thomson Innovation Search

Database: Thomson Innovation
Patent coverage: US EP WO JP DE GB FR CN KR DWPI
Time line: 01/01/1836 to 07/03/2011

S. No. Concept Scope Search String No. of Hits
1 Doubly-fed Induction Generator: Keywords(broad) Claims, Title, and Abstract (((((doubl*3 OR dual*3 OR two) ADJ3 (power*2 OR output*4 OR control*4 OR fed OR feed*3)) NEAR5 (induction OR asynchronous)) NEAR5 (generat*3 OR machine*1 OR dynamo*1)) OR dfig or doig) 873
2 Doubly-fed Induction Generator: Keywords(broad) Full Spec. (((((doubl*3 OR dual*3 OR two) ADJ3 (power*2 OR output*1 OR control*4 OR fed OR feed*3)) NEAR5 (generat*3 OR machine*1 OR dynamo*1))) OR dfig or doig) -
3 Induction Machine: Classes US, IPC, and ECLA Classes ((318/727 OR 322/047) OR (H02K001742)) -
4 Generators: Classes US, IPC, and ECLA Classes ((290/044 OR 290/055) OR (F03D000900C OR H02J000338 OR F03D0009* OR H02P0009*)) -
5 Combined Query - 2 AND 3 109
6 Combined Query - 2 AND 4 768
7 French Keywords Claims, Title, and Abstract ((((doubl*3 OR dual*3 OR two OR deux) NEAR4 (nourris OR feed*3 OR puissance OR sortie*1 OR contrôle*1)) NEAR4 (induction OR asynchron*1) NEAR4 (générateur*1 OR generator*1 OR machine*1 OR dynamo*1)) OR dfig or doig) 262
8 German Keywords Claims, Title, and Abstract (((((doppel*1 OR dual OR two OR zwei) ADJ3 (ausgang OR ausgänge OR kontroll* OR control*4 OR gesteuert OR macht OR feed*1 OR gefüttert OR gespeiste*1)) OR (doppeltgefüttert OR doppeltgespeiste*1)) NEAR4 (((induktion OR asynchronen) NEAR4 (generator*2 OR maschine*1 OR dynamo*1)) OR (induktion?maschinen OR induktion?generatoren OR asynchronmaschine OR asynchrongenerator))) OR dfig) 306
9 Doubly-fed Induction Generator: Keywords(narrow) Full Spec. (((((((doubl*3 OR dual*3) ADJ3 (power*2 OR output*4 OR control*4 OR fed OR feed*3))) NEAR5 (generat*3 OR machine*1 OR dynamo*1))) SAME wind) OR (dfig SAME wind)) 1375
10 Top Assignees - (vestas* OR (gen* ADJ2 electric*) OR ge OR hitachi OR woodward OR repower OR areva OR gamesa OR ingeteam OR nordex OR siemens OR (abb ADJ2 research) OR (american ADJ2 superconductor*) OR (korea ADJ2 electro*) OR (univ* NEAR3 navarra) OR (wind OR technolog*) OR (wind ADJ2 to ADJ2 power)) -
11 Combined Query - 2 AND 10 690
12 Top Inventors - ((Andersen NEAR2 Brian) OR (Engelhardt NEAR2 Stephan) OR (Ichinose NEAR2 Masaya) OR (Jorgensen NEAR2 Allan NEAR2 Holm) OR ((Scholte ADJ2 Wassink) NEAR2 Hartmut) OR (OOHARA NEAR2 Shinya) OR (Rivas NEAR2 Gregorio) OR (Erdman NEAR2 William) OR (Feddersen NEAR2 Lorenz) OR (Fortmann NEAR2 Jens) OR (Garcia NEAR2 Jorge NEAR2 Martinez) OR (Gertmar NEAR2 Lars) OR (KROGH NEAR2 Lars) OR (LETAS NEAR2 Heinz NEAR2 Hermann) OR (Lopez NEAR2 Taberna NEAR2 Jesus) OR (Nielsen NEAR2 John) OR (STOEV NEAR2 Alexander) OR (W?ng NEAR2 Haiqing) OR (Yuan NEAR2 Xiaoming)) -
13 Combined Query - ((3 OR 4) AND 10) 899
14 Final Query - 1 OR 5 OR 6 OR 7 OR 8 OR 9 OR 11 OR 13 2466(1060 INPADOC Families)

Taxonomy

  • Use the mouse(click and drag/scroll up or down/click on nodes) to explore nodes in the detailed taxonomy
  • Click on the red arrow adjacent to the node name to view the content for that particular node in the dashboard

Sample Analysis

A sample of 139 patents from the search is analyzed based on the taxonomy. Provided a link below for sample spread sheet analysis for doubly-fed induction generators.

Patent Analysis

S.No. Patent/Publication No. Publication Date
(mm/dd/yyyy) 		Assignee/Applicant Title Dolcera Analysis
Problem Solution
1 US20100117605 05/13/10 Woodward Method of and apparatus for operating a double-fed asynchronous machine in the event of transient mains voltage changes The short-circuit-like currents in the case of transient mains voltage changes lead to a corresponding air gap torque which loads the drive train and transmission lines can damages or reduces the drive train and power system equipments. The method presents that the stator connecting with the network and the rotor with a converter. The converter is formed to set a reference value of electrical amplitude in the rotor, by which a reference value of the electrical amplitude is set in the rotor after attaining a transient mains voltage change, such that the rotor flux approaches the stator flux.
2 US20100045040 02/25/10 Vestas Wind Systems Variable speed wind turbine with doubly-fed induction generator compensated for varying rotor speed The DFIG system has poor damping of oscillations within the flux dynamics due to cross coupling between active and reactive currents, which makes the system potentially unstable under certain circumstances and complicates the work of the rotor current controller. These oscillations can damage the drive train mechanisms. A compensation block is arranged, which feeds a compensation control output to the rotor of the generator. The computation unit computes the control output during operation of the turbine to compensate partly for dependencies on a rotor angular speed of locations of poles of a generator transfer function, so that the transfer function is made independent of variations in the speed during operation of the turbine which eliminates the oscillations and increases the efficiency of the wind turbine.
3 US20090267572 10/29/09 Woodward Current limitation for a double-fed asynchronous machine Abnormal currents can damage the windings in the doubly- fed induction generator. Controlling these currents with the subordinate current controllers cannot be an efficient way to extract the maximum amount of active power. The method involves delivering or receiving of a maximum permissible reference value of an active power during an operation of a double-fed asynchronous machine, where predetermined active power and reactive power reference values are limited to a calculated maximum permissible active and reactive power reference values, and hence ensures reliable regulated effect and reactive power without affecting the power adjustment, the rotor is electrically connected to a pulse-controlled inverter by slip rings with a static frequency changer, and thus a tension with variable amplitude and frequency is imposed in the rotor.
4 US20090008944 01/08/09 Universidad Publica De Navarra Method and system of control of the converter of an electricity generation facility connected to an electricity network in the presence of voltage sags in said network Double-fed asynchronous generators are very sensitive to the faults that may arise in the electricity network, such as voltage sags. During the sag conditions the current which appears in said converter may reach very high values, and may even destroy it. During the event of a voltage sag occurring, the converter imposes a new set point current which is the result of adding to the previous set point current a new term, called demagnetizing current, It is proportional to a value of free flow of a generator stator. A difference between a value of a magnetic flow in the stator of the generator and a value of a stator flow associated to a direct component of a stator voltage is estimated. A value of a preset calculated difference is multiplied by a factor for producing the demagnetizing current.
5 US7355295 04/08/08 Ingeteam Energy Variable speed wind turbine having an exciter machine and a power converter not connected to the grid a) The active switching of the semiconductors of the grid side converter injects undesirable high frequency harmonics to the grid.
b) The use of power electronic converters (4) connected to the grid (9) causes harmonic distortion of the network voltage. 		Providing the way that power is only delivered to the grid through the stator of the doubly fed induction generator, avoiding undesired harmonic distortion.
Grid Flux Orientation (GFO) is used to accurately control the power injected to the grid. An advantage of this control system is that it does not depend on machine parameters, which may vary significantly, and theoretical machine models, avoiding the use of additional adjusting loops and achieving a better power quality fed into the utility grid.
6 US20080203978 08/28/08 Semikron Frequency converter for a double-fed asynchronous generator with variable power output and method for its operation Optislip circuit with a resistor is used when speed is above synchronous speed, results in heating the resistor and thus the generator leads to limitation of operation in super synchronous range which results in tower fluctuations. Providing a back-to-back converter which contains the inverter circuit has direct current (DC) inputs, DC outputs, and a rotor-rectifier connected to a rotor of a dual feed asynchronous generator. A mains inverter is connected to a power grid, and an intermediate circuit connects one of the DC inputs with the DC outputs. The intermediate circuit has a semiconductor switch between the DC outputs, an intermediate circuit condenser between the DC inputs, and a diode provided between the semiconductor switch and the condenser. Thus the system is allowed for any speed of wind and reduces the tower fluctuations.
7 US20070210651 09/13/07 Hitachi Power converter for doubly-fed power generator system During the ground faults, excess currents is induced in the secondary windings and flows into power converter connected to secondary side and may damage the power converter. Conventional methods of increasing the capacity of the power converter increases system cost, degrade the system and takes time to activate the system to supply power again. The generator provided with a excitation power converter connected to secondary windings of a doubly-fed generator via impedance e.g. reactor, and a diode rectifier connected in parallel to the second windings of the doubly-fed generator via another impedance. A direct current link of the rectifier is connected in parallel to a DC link of the converter. A controller outputs an on-command to a power semiconductor switching element of the converter if a value of current flowing in the power semiconductor switching element is a predetermined value or larger.
8 US20070132248 06/14/07 General Electric System and method of operating double fed induction generators Wind turbines with double fed induction generators are sensitive to grid faults. Conventional methods are not effective to reduce the shaft stress during grid faults and slow response and using dynamic voltage restorer (DVR) is cost expensive. The protection system has a controlled impedance device. Impedance device has bidirectional semiconductors such triac, assembly of thyristors or anti-parallel thyristors. Each of the controlled impedance devices is coupled between a respective phase of a stator winding of a double fed induction generator and a respective phase of a grid side converter. The protection system also includes a controller configured for coupling and decoupling impedance in one or more of the controlled impedance devices in response to changes in utility grid voltage and a utility grid current. High impedance is offered to the grid during network faults to isolate the dual fed wind turbine generator.
9 US20060192390 08/31/06 Gamesa Innovation Control and protection of a doubly-fed induction generator system A short-circuit in the grid causes the generator to feed high stator-currents into the short-circuit and the rotor-currents increase very rapidly which cause damage to the power-electronic components of the converter connecting the rotor windings with the rotor-inverter. The converter is provided with a clamping unit which is triggered from a non-operation state to an operation state, during detection of over-current in the rotor windings. The clamping unit comprises passive voltage-dependent resistor element for providing a clamping voltage over the rotor windings when the clamping unit is triggered.
10 US20050189896 09/01/05 ABB Research Method for controlling doubly-fed machine Controlling the double fed machines on the basis of inverter control to implement the targets set for the machine, this model is extremely complicated and includes numerous parameters that are often to be determined. A method is provided to use a standard scalar-controlled frequency converter for machine control. A frequency reference for the inverter with a control circuit, and reactive power reference are set for the machine. A rotor current compensation reference is set based on reactive power reference and reactive power. A scalar-controlled inverter is controlled for producing voltage for the rotor of the machine, based on the set frequency reference and rotor current compensation reference.

Click here to view the detailed analysis sheet for doubly-fed induction generators patent analysis.

Article Analysis

S.No. Title Publication Date
(mm/dd/yyyy) 		Journal/Conference Dolcera Summary
1 Study on the Control of DFIG and its Responses to Grid Disturbances 01/01/06 Power Engineering Society General Meeting, 2006. IEEE Presented dynamic model of the DFIG, including mechanical model, generator model, and PWM voltage source converters. Vector control strategies adapted for both the RSC and GSC to control speed and reactive power independently. Control designing methods, such as pole-placement method and the internal model control are used. MATLAB/Simulink is used for simulation.
2 Application of Matrix Converter for Variable Speed Wind Turbine Driving an Doubly Fed Induction Generator 05/23/06 Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006. A matrix converter is replaced with back to back converter in a variable speed wind turbine using doubly fed induction generator. Stable operation is achieved by stator flux oriented control technique and the system operated in both sub and super synchronous modes, achieved good results.
3 Optimal Power Control Strategy of Maximizing Wind Energy Tracking and Conversion for VSCF Doubly Fed Induction Generator System 08/14/06 Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International Proposed a new optimal control strategy of maximum wind power extraction strategies and testified by simulation. The control algorithm also used to minimize the losses in the generator. The dual passage excitation control strategy is applied to decouple the active and reactive powers. With this control system, the simulation results show the good robustness and high generator efficiency is achieved.
4 A Torque Tracking Control algorithm for Doubly–fed Induction Generator 01/01/08 Journal of Electrical Engineering Proposed a torque tracking control algorithm for Doubly fed induction generator using PI controllers. It is achieved by controlling the rotor currents and using a stator voltage vector reference frame.
5 Fault Ride Through Capability Improvement Of Wind Farms Using Doubly Fed Induction Generator 09/04/08 Universities Power Engineering Conference, 2008. UPEC 2008. 43rd International An active diode bridge crowbar switch presented to improve fault ride through capability of DIFG. Showed different parameters related to crowbar such a crowbar resistance, power loss, temperature and time delay for deactivation during fault.

Click here to view the detailed analysis sheet for doubly-fed induction generators article analysis.

Top Cited Patents

S. No. Patent/Publication No. Publication Date
(mm/dd/yyyy) 		Assignee/Applicant Title Citation Count
1 US5289041 02/22/94 US Windpower Speed control system for a variable speed wind turbine 80
2 US4982147 01/01/91 Oregon State Power factor motor control system 62
3 US5028804 07/02/91 Oregon State Brushless doubly-fed generator control system 51
4 US5239251 08/24/93 Oregon State Brushless doubly-fed motor control system 49
5 US6856038 02/15/05 Vestas Wind Systems Variable speed wind turbine having a matrix converter 43
6 WO1999029034 06/10/99 Asea Brown A method and a system for speed control of a rotating electrical machine with flux composed of two quantities 36
7 WO1999019963 04/22/99 Asea Brown Rotating electric machine 36
8 US7015595 03/21/06 Vestas Wind Systems Variable speed wind turbine having a passive grid side rectifier with scalar power control and dependent pitch control 34
9 US4763058 08/09/88 Siemens Method and apparatus for determining the flux angle of rotating field machine or for position-oriented operation of the machine 32
10 US7095131 08/22/06 General Electric Variable speed wind turbine generator 25

Top Cited Articles

S. No. Title Publication Date Journal/Conference Citations Count
1 Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation May. 1996 IEEE Proceedings Electric Power Applications 906
2 Doubly fed induction generator systems for wind turbines May. 2002 IEEE Industry Applications Magazine 508
3 Dynamic modeling of doubly fed induction generator wind turbines May. 2003 IEEE Transactions on Power Systems 274
4 Modeling and control of a wind turbine driven doubly fed induction generator Jun. 2003 IEEE Transactions on Energy Conversion 271
5 Ride through of wind turbines with doubly-fed induction generator during a voltage dip Jun. 2005 IEEE Transactions on Energy Conversion 246
6 Dynamic modeling of a wind turbine with doubly fed induction generator July. 2001 IEEE Power Engineering Society Summer Meeting, 2001 196
7 Modeling of the wind turbine with a doubly fed induction generator for grid integration studies Mar. 2006 IEEE Transactions on Energy Conversion 174
8 A doubly fed induction generator using back-to-back PWM converters supplying an isolated load from a variable speed wind turbine Sept. 1996 IEEE Proceedings Electric Power Applications 150
9 Doubly fed induction generator model for transient stability analysis Jun. 2005 IEEE Transactions on Energy Conversion 106
10 Control of a doubly fed induction generator in a wind turbine during grid fault ride-through Sept. 2006 IEEE Transactions on Energy Conversion 112

White Space Analysis

  • White-space analysis provides the technology growth and gaps in the technology where further R&D can be done to gain competitive edge and to carry out incremental innovation.
  • Dolcera provides White Space Analysis in different dimensions. Based on Product, Market, Method of Use, Capabilities or Application or Business Area and defines the exact categories within the dimension.
  • Below table shows a sample representation of white space analysis for controlling DFIG parameters with converters, based on the sample analysis.
White Space of converters used to control
Active power
Reactive Power
Decoupled P-Q control
Field oriented control
Direct torque control
Speed control
Frequency Control
Pitch control
PWM Technique
Low voltage ride through
Network fault/Grid fault
Symmetrical and Asymmetrical Faults
Temp control
Grid Side active converters
 US20070052394A1

US20060028025A1

US20100148508A1

US20100133816A1 EP2166226A1 US20070132248A1 US20070052394A1 US20100096853A1

US20100114388A1 US20090008938A1 WO2010079234A1

US20090230689A1 US20090206606A1 US20070024247A1

US20090206606A1

US20080129050A1

US20100156192A1

US20070182383A1

US20100002475A1

US20080296898A1 US20070273155A1 US20070278797A1

US20070052244A1

US20070024059A1 US20060238929A1

US20070177314A1 EP2166226A1

US20090121483A1 US20090008938A1

Grid side passive converters
 US20030151259A1 US20030151259A1 US20030151259A1
Rotor side converter
 US20100142237A1

US20070052394A1 US20060028025A1

US20100096853A1

US20100148508A1 US20100133816A1 US20070132248A1 US20070052394A1

US20100114388A1 US20090008938A1 WO2010079234A1

US20090230689A1 US20070024247A1

US20080129050A1 US20070182383A1 US20100002475A1

US20080296898A1 US20070273155A1 US20070278797A1

US20080157533A1

US20070052244A1 US20070024059A1 US20060238929A1

US20090273185A1

US20070177314A1

US20090121483A1

US20090008938A1

Matrix converters
 US20020079706A1 US20070216164A1 US20090265040A1 US20070216164A1

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Key Findings

Major Players

Major Players

Key Patents

Key Patents

IP Activity

  • Patenting activity has seen a very high growth rate in the last two years.
Year wise IP Activity

Geographical Activity

  • USA, China, Germany, Spain, and India are very active in wind energy research.
Geographical Activity

Research Trend

  • Around 86% patents are on controlling the doubly-fed induction generation(DFIG) which indicates high research activity going on in rating and controlling of the DFIG systems.

Issues in the Technology

  • 86% of the patent on DFIG operation are focusing on grid connected mode of operation, suggesting continuous operation of the DFIG system during weak and storm winds, grid voltage sags, and grid faults are major issues in the current scenario.
Problem Solution Mapping

Emerging Player

  • Woodward is a new and fast developing player in the field of DFIG technology. The company filed 10 patent applications in the field in year 2010, while it has no prior IP activity.

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References

Background References
  1. Wind Energy History
  2. Wind Energy
  3. Wind Energy Basics
  4. How Wind Turbines Work
  5. Different types of wind turbines
  6. Onshore Vs Offshore Wind Turbines
  7. Wind Power
  8. Types of Wind Farms
  9. Offshore Technology
  10. The Fundamentals of Wind Energy
  11. Winder Tower
  12. Wind Towers
  13. Wind Turbine Blades
  14. Wind Turbine Design Styles
  15. Rotor Hub Assembly
  16. Gearbox for Wind Turbines
  17. The Wind Turbine Yaw Mechanism
  18. The Wind Turbine Yaw Mechanism
  19. Wind Turbine Generators
  20. Inside wind turbines
 Image References
  1. DFIG Working Principle
  2. Country share of total capacity
  3. Wind turbine principle
  4. Horizontal axis wind turbine
  5. Vertical axis wind turbine
  6. Pitch control
  7. Yaw control
  8. Onshore Wind turbines
  9. Offshore wind turbines
  10. Wind turbine parts
  11. Tower height Vs Power output
  12. Tubular tower
  13. Lattice tower
  14. Guy tower
  15. Tiltup tower
  16. Free stand tower
  17. Single blade turbine
  18. Two blade turbine
  19. Three blade turbine
  20. Internal nacelle structure
  21. Rotor hub
  22. Shaft system
  23. Gear box
  24. Anemometer & Wind vane

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