Main field current transient control circuit for...

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H - Electricity

02

P

322/28, 318/78

H02P 9/08 (2006.01) H02H 7/06 (2006.01) H02K 19/36 (2006.01) H02P 1/46 (2006.01) H02P 9/10 (2006.01) H02P 9/28 (2006.01)

Patent

CA 1073049

ABSTRACT OF THE DISCLOSURE In a synchronous generator-motor, having both its main armature wind- ings and exciter winding located on the stator and both the main field winding and the exciter armature windings including a rectifier for providing DC current to the main field located on the rotor and also including a voltage regulator responsive to the main armature voltage for regulating the current applied to the exciter field; the effects of transient currents in the main field windings resulting from load removal during the generator mode of operation and the vol- tages induced during motor start-up are substantially reduced by utilizing a resistive circuit operatively controlled by a transistor switching network that is in turn responsive to the exciter voltage and the induced voltage in the main field windings.

257869

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