Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1995-05-17
1996-07-30
Nguyen, Matthew V.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 98, H02M 3335, H02M 324
Patent
active
055418279
ABSTRACT:
A switching amplifier circuit includes a tri-state switching circuit receiving a DC voltage signal and having first electrical switches responsive to first control signals and providing a differential AC voltage waveform at a predetermined frequency alternating between a positive DC voltage, negative DC voltage and a zero voltage. The switching amplifier further includes a rectifier circuit having second electrical switches responsive to second control signals for receiving the differential AC voltage output waveform from the tri-state switching circuit and providing a desired output signal. The second control signals are applied to switch the second electrical switches only when the first electrical switches of the tri-state switching circuit are in the zero voltage state.
REFERENCES:
patent: 4992751 (1991-02-01), Attwood et al.
patent: 5231563 (1993-07-01), Jitaru
patent: 5255174 (1993-10-01), Murugan
patent: 5400235 (1995-03-01), Carroll
patent: 5430632 (1995-07-01), Meszlenyl
patent: 5438498 (1995-08-01), Ingemi
patent: 5442540 (1995-08-01), Hua et al.
Zoltan Zansky, Phase-modulated ac supply exhibits high efficiency, EDN Oct. 3, 1984, pp. 177-180.
Doble Engineering Company
Nguyen Matthew V.
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