Variable-speed power generating system

Details Variable-speed power generating system Variable-speed power generating system

H - Electricity

02

P

322/15

H02P 9/48 (2006.01) H02P 9/00 (2006.01) H02P 9/42 (2006.01)

Patent

CA 1279368

ABSTRACT OF THE DISCLOSURE A variable-speed power generating system comprises a variable-speed generator electrically connected at its primary winding to an electric power system and at its secondary winding to the electric power system through a frequency converter and mechanical- ly coupled to a driver driving the secondary side thereof, a phase detector generating an output signal representing a slip frequency in response to the application of a first input having a frequency component of an output generated from the primary winding of the variable- speed generator and a second input having a frequency component corresponding to the rotation speed of the driver, a controller controlling the frequency converter on the basis of a reference phase provided by the output signal of the phase detector, and regulating means for controlling the frequency converter so that, when the variable-speed generator is disconnected from the electric power system, the frequency applied to the secondary winding of the variable-speed generator may not deviate from a predetermined allowable range of variable frequency operation of the frequency converter.

556703

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