Auxiliary power generation in a motor transformer

Electric power conversion systems – Current conversion – With condition responsive means to control the output...

Reexamination Certificate

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C363S071000, C318S139000

Reexamination Certificate

active

07092267

ABSTRACT:
A power supply generates alternating current and direct current from a constant-voltage source. A multi-phase pulse width modulation voltage source inverter is connected across the source to output multi-phase alternating current. At least one waveform generator is bridged in parallel with the inverter, with each waveform generator outputting zero-sequence waveform current compensated to maintain the multi-phase current within a predetermined tolerance from a desired set point. A rectifier receives the waveform current and generates direct current.

REFERENCES:
patent: 5057808 (1991-10-01), Dhyanchand
patent: 5341075 (1994-08-01), Cocconi
patent: 5537307 (1996-07-01), Hirose et al.
patent: 6812667 (2004-11-01), Yasohara et al.

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