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A starting system for a prime mover coupled to a generator includes a step-up inverter which converts DC power at a first voltage into AC power at a second, higher voltage. Halfwave pulses in the AC power are selectively applied to the generator by a pulse-population inverter coupled to the step-up

A starting system for a prime mover coupled to a generator includes a step-up inverter which converts DC power at a first voltage into AC power at a second, higher voltage. Halfwave pulses in the AC power are selectively applied to the generator by a pulse-population inverter coupled to the step-up inverter such that the generator is operated as a motor to supply motive starting power to the prime mover.

대표청구항 ▼

[ I claim:] [9.] A starting/generating system, comprising:a prime mover;a generator coupled to the prime mover and having a neutral, a set of polyphase armature windings and a field winding;a first inverter which converts DC battery power into a first alternating waveform;a second inverter coupled t

[ I claim:] [9.] A starting/generating system, comprising:a prime mover;a generator coupled to the prime mover and having a neutral, a set of polyphase armature windings and a field winding;a first inverter which converts DC battery power into a first alternating waveform;a second inverter coupled to the first inverter;wherein the first inverter includes first and second inverter switches coupled to first and second primary windings of a step-up transformer having a set of secondary windings and wherein the second inverter includes a first set of bidirectional switches coupled between the set of secondary windings and the set of polyphase armature windings and a second set of bidirectional switches coupled between the set of polyphase armature windings and the neutral; andan inverter control which operates the first and second sets of bidirectional switches during operation in a starting mode to deliver polyphase second alternating waveforms to the polyphase armature windings and thereby operate the generator as a motor to start the prime mover wherein each of the polyphase second alternating waveforms comprises a second series of halfwave pulses selected from the first alternating waveform.