Patent ID: 6486640
Filing Date: 2002-11-26
Classification: H02P

Abstract:
A control system for a variable frequency generator comprising a main stator winding for providing a generator output, the main stator winding being excited by a main rotor winding, and a main exciter rotor winding for energising the main rotor winding, the main exciter rotor winding being excited by a main exciter field winding, the control system comprising:sensing means for receiving the generator output to sense operating parameters of the generator and for providing signals respectively representing an average generator output voltage, a high phase take-over signal corresponding to the highest one of sensed average voltages of the phases of the generator output, and a generator output current signal; a plurality of inputs adapted to receive the signals from the sensing means; an output adapted to drive the main exciter field winding; and a plurality of negative feedback loops between the output and the plurality of inputs; each loop including a respective stability compensation network operable to process a feedback signal corresponding to one of the operating parameters.