Method and systems for an engine starter/generator

Details Method and systems for an engine starter/generator Method and systems for an engine starter/generator

2008-12-31

2011-10-04

Zarroli, Michael (Department: 2839)

Prime-mover dynamo plants

Electric control

Starting and generating dynamo

C290S046000, C318S400320, C318S800000

Reexamination Certificate

active

08030788

ABSTRACT:
A method and system for an engine starter/generator is provided. The starter/generator system includes a three phase squirrel cage induction machine, a three phase inverter/converter electrically coupled to the three phase squirrel cage induction machine. The starter/generator system also includes a bidirectional DC-DC converter electrically coupled to the three phase inverter/converter, and a digital control board configured to sensorlessly determine a rotor angle from a plurality of phase currents to the induction machine during a start mode. During the start mode, logic in the digital control board configures the starter/generator system into a combination of an induction motor, a three phase DC-AC inverter, and a DC-DC boost converter, and during a generate mode, the logic in the digital control board configures the starter/generator system into a combination of an induction generator, a three phase AC-DC converter, and a DC-DC buck converter.

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International Search Report and Written Opinion issued in connection with PCT/US2009/067497, Sep. 6, 2010.

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