07253537 is referenced by 38 patents and cites 9 patents.

A protection system and a protection method are provided for protecting a double fed induction generator and a gearbox during a grid fault. The protection system includes a plurality of controlled impedance devices. Each of the controlled impedance devices is coupled between a respective phase of a stator winding of the 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 plurality of controlled impedance devices in response to changes in at least one of a utility grid voltage and a utility grid current.

Title
System and method of operating double fed induction generators
Application Number
11/297775
Publication Number
7253537 (B2)
Application Date
December 8, 2005
Publication Date
August 7, 2007
Inventor
Changyong Wang
Shanghai
CN
Xiaoming Yuan
Shanghai
CN
Robert William Delmerico
Clifton Park
NY, US
Haiqing Weng
Shanghai
CN
Agent
Patrick K Patnode
Ann M Agosti
Assignee
General Electric Company
NY, US
IPC
H02P 9/48
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