System and method of operating double fed induction generators

Details System and method of operating double fed induction generators System and method of operating double fed induction generators

2007-08-07

2007-08-07

Ponomarenko, Nicholas (Department: 2834)

Prime-mover dynamo plants

Electric control

Fluid-current motors

C322S037000

Reexamination Certificate

active

11297775

ABSTRACT:
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.

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Prof. Goran Strbac and Dr. Frank Allison “A New Controller for DFIG Based Wind Farms”, The University of Manchester Intellectual Property Limited 1824 Pages—2 Available online at http://www.umip.com/pdfs/DFIG%20wind%20farms.pdf.

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