Electricity: single generator systems – With physical starting and/or stopping of the generator
Patent
1989-10-25
1990-11-06
Wong, Peter S.
Electricity: single generator systems
With physical starting and/or stopping of the generator
322 59, 290 38R, 290 46, 363 37, 363 49, H02M 5458, F02N 1108
Patent
active
049689266
ABSTRACT:
A power conversion system is operable in a generating mode to convert motive power developed by a prime mover into electrical power and in a starting mode to convert electrical power developed by a source of AC power into motive power for starting the prime mover. The system includes a stepped waveform inverter having a plurality of subinverters that are operable in the generating mode to produce rectangular waveforms wherein the waveforms are summed by a summing transformer to produce a stepped AC output waveform. During operation in the starting mode, the output of a rectifier bridge and an input of one of the subinverters are connected together by an interphase transformer. DC power is developed at a mid-tap of the interphase transformer and is delivered to the remaining subinverters which in turn develop AC power for operating a brushless generator as a motor.
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Sundstrand Corporation
Wong Peter S.
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