SWITCHED RELUCTANCE STARTER/GENERATOR SYSTEM AND METHOD OF CONTROLLING SAME

摘要

A power/generator system controls a turbine engine (14) in a start mode, and converts mechanical energy from the turbine engine (14) to electrical energy in a generate mode. The system comprises a switched reluctance machine (10), an inverter (18) having a dc input/output coupled to the dc distribution bus (20) and coupled to each of the machines (10) phase windings, and a controller (22) to monitor rotor position (30) and generate switching control signals (26) to the inverter (18) for each of the phase windings at a fixed angle prior to alignment of the rotor pole with the associated stator pole, which couples the phase winding to the dc bus (20) and allows dc phase current to energize the winding. At a fixed angle prior to alignment the inverter (18) is controlled to decouple the phase winding from the dc bus (20) and forcing dc current to flow back through diodes to allow the switched reluctance machine to operate as a generator.