Phase displaced, multiple inverter bridge circuits with waveform

Details Phase displaced, multiple inverter bridge circuits with waveform Phase displaced, multiple inverter bridge circuits with waveform

1990-11-13

1992-12-01

Beha, Jr., William H.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 43, 363 72, H02M 7521

Patent

active

051684373

ABSTRACT:
An apparatus and method for reducing certain harmonics in the output of static inverters. Static inverters which employ a switching device arranged in a bridge circuit to convert direct current power to alternating current power produce undesired harmonics in the output of the inverter. Harmonic neutralization techniques are further improved by the invention utilizing selective notching of the inverter pole voltage and a coordinate phase shift between the set of pole voltages produced by the individual inverters. The notch angles in the individual pole voltage outputs are chosen to minimize or eliminate specific undesired harmonics.

REFERENCES:
patent: 3324376 (1967-06-01), Hunt
patent: 3792286 (1974-02-01), Meier
patent: 3876923 (1975-04-01), Humphrey et al.
patent: 4050006 (1977-09-01), Stich
patent: 4063143 (1977-12-01), Forstbauer
patent: 4204264 (1980-05-01), Lipman
patent: 4245290 (1981-01-01), Lipman
patent: 4321663 (1982-03-01), Krtek
patent: 4870557 (1989-09-01), Stacey
patent: 4975822 (1990-12-01), Lipman

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