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/* Insights */
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* Patenting activity has seen a very high growth rate in the last two years 2009 and 2010.
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* USA, China, Germany, Spain , and India share major part of are very active in wind energy generationresearch.
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* Research activity mainly going Around 86% patents are on rating and controlling of the Doublydoubly-fed induction generation systems. Out of 139 patents 120 patents are discussing about (DFIG) which indicates high research activity going on in rating and controlling of the DFIGsystems.* Continuous Operation 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. Among 28 patents covering DFIG operation, 24 patents are focusing on grid connected mode of operation.* [http://www.woodward.com/ Woodward GMBH] is a new and fast developing player in the field of DFIG technology,and . The company filed 10 patent applications in the field in year 2010, while it has no prior IP activity.<br><br><br>
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