Changes
/* Search Strategy */
The databases covered in the search include: US Grant, GB App, US App, FR App, WO App, DE Util, EP Grant, DE Grant, EP App, DE App, JP Util, JP Grant, JP App, CN Util, CN App, KR Util , KR Grant, KR App, Other, DWPI
Time line:01/01/1836 to 07/03/2011
{|border="2" cellspacing="0" cellpadding="4" width="100%"
|-
|align = "center"|1
|align = "center"|795 864 hits
|Doubly fed induction generator keywords
|CTB=(((((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);
|-
|align = "center"|2
|align = "center"|93 108 hits
|Induction motor classes AND Doubly fed generator keywords
|(UC=(318/727 OR 322/047) OR AIOE=(H02K001742)) AND ALL=(((((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);
|-
|align = "center"|3
|align = "center"|675 757 hits
|Broad classes of generators AND Doubly fed induction generator keywords
|(UC=(290/044 OR 290/055) OR AIOE=(F03D000900C OR H02J000338 OR F03D0009* OR H02P0009*)) AND ALL=(((((Doubl*2 or dual*3 or two) adj3 (power*2 or output*1 or control*3 or fed or feed*3)) near5 (induction or asynchronous)) near5 (generat*3 or machine*1 or dynamo*1)) or DFIG);
|-
|align = "center"|4
|align = "center"|240 257 hits
|French keywords
| CTB=((((Doubl*3 or dual*3or ADJ two or deux) near4 (nourris or feed*3 or puissance or sortie*1 or contrôle*1)) near4 (induction or asynchrone*1) near4 (générateur*1 or generator*1 or machine*1 or dynamo*1)) or DFIG);
|-
|align = "center"|5
|align = "center"|282 302 hits
|German keywords
|CTB=(((((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);
|-
|align = "center"|6
|align = "center"|920 1358 hits
|
|ALL=(((((((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)) AND DP>=(18360101);
|-
|align = "center"|7
|align = "center"|'''1434 1807 hits (702 916 INPADOC Families)'''
|Combined Query
|1 OR 2 OR 3 OR 4 OR 5 OR 6
