H - Electricity – 02 – K
Patent
H - Electricity
02
K
322/17, 318/88
H02K 47/04 (2006.01) F02N 11/04 (2006.01)
Patent
CA 2005961
ABSTRACT OF THE DISCLOSURE A variable speed, constant frequency starter generator system is provided with a dynamoelectric machine, electrically connected to a multiple-phase bus and pair of multiple-phase rectifiers for producing a DC voltage on a pair of link conductors. An inverter converts the DC voltage to floating AC voltage which is further converted to a ground-referenced AC voltage by a transformer. During generator operation, the output voltage of the machine is rectified by at least one of the rectifiers to produce a DC voltage on the link conductors which is converted to a constant frequency AC voltage by the inverter. During starter operation, an externally supplied AC voltage is applied to the transformer. The transformer converts the externally applied AC voltage to a pair of phase-displaced AC voltages which are rectified by rectifiers to produce twelve-pulse rectified DC voltage on the link conductors. This reduces the harmonic content of the current supplied by the external power source.
Baker Donal E.
Ogden Jack W.
Baker Donal E.
Ogden Jack W.
Riches Mckenzie & Herbert Llp
Sundstrand Corporation
Westinghouse Electric Corporation
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