Importance

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Abstract

An inverter for use with a brushless generator for operating the generator in generating and starting modes includes an interphase transformer (IPT) having first and second end terminals and a mid-tap, a first subinverter coupled between a rectifier and the first end terminal of the IPT and a second subinverter. Contactors are operable in the generating mode for coupling a main generator portion armature winding to the rectifier and the second subinverter between the rectifier and the second end terminal of the IPT. The contactors are operable in the starting mode for coupling a source of power to the rectifier, the IPT mid-tap to the main generator portion armature winding and the second subinverter between the rectifier and an exciter field winding of the geneator. A control unit is operable in the generating mode for operating the subinverters such that substantially constant-frequency AC power is produced at the mid-tap at the IPT and is further operable in the starting mode such that AC waveforms are delivered to the exciter field winding and the main generator portion armature windings so that the generator is operated as a motor.

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