Regulator for stepped-waveform inverter

Details Regulator for stepped-waveform inverter Regulator for stepped-waveform inverter

1989-12-20

1991-06-25

Wong, Peter S.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 43, 363 71, 363 97, 322 28, H02M 3335

Patent

active

050272659

ABSTRACT:
A regulator for a stepped-waveform inverter having first and second subinverters which produce waveforms having a variable phase displacement therebetween and a summing transformer which sums the outputs of the subinverters includes circuitry for detecting a deviation of a parameter of the AC output power produced by the inverter from a reference and circuitry coupled to the detecting circuitry for deriving a phase command signal from the detected deviation. A comparator compares the phase command signal with a ramp signal to obtain a comparison signal and circuitry operates the first and second subinverters responsive to the comparison signal to cause the phase displacement to vary in accordance with the phase command signal.

REFERENCES:
patent: 3374414 (1968-03-01), Garnett
patent: 3477010 (1969-11-01), VeNard
patent: 3775662 (1973-11-01), Compoly et al.
patent: 4063143 (1977-12-01), Forstbauer
patent: 4494179 (1985-01-01), Inokuchi et al.
patent: 4599687 (1986-07-01), Smith
patent: 4666020 (1987-05-01), Watanabe
patent: 4870557 (1989-09-01), Stacey
Article entitled, "Which DC/AC Inverter?", appearing in Electronic Design, Dec. 6, 1974, by George A. O'Sullivan.

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