Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1995-12-20
1997-02-04
Wong, Peter S.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363124, H02M 3335, H02M 700
Patent
active
056005474
ABSTRACT:
An inverter circuit that can provide a stable AC power supply by synchronizing the switching operations of a DC-to-DC converter and a DC-to-AC converter which constitute the inverter circuit with each other.
The inverter circuit includes an error amplifier for comparing a feedback control voltage from the DC-to-AC converter with a reference voltage and amplifying the resultant voltage of comparison, a frequency synchronizing section for providing a sawtooth voltage synchronized with the frequency of a ripple voltage occurring at an output terminal of the DC-to-DC converter due to the switching operation of the DC-to-AC converter, and a comparator for comparing the sawtooth voltage with the output voltage of the error amplifier, and providing a switching control signal to the DC-to-DC converter as result of comparison.
REFERENCES:
patent: 3818306 (1974-06-01), Marini
patent: 4316136 (1982-02-01), Saxarra et al.
patent: 4472672 (1984-09-01), Pacholok
patent: 4580090 (1986-04-01), Bailey et al.
patent: 4811184 (1989-03-01), Koninsky et al.
patent: 5408404 (1995-04-01), Mitchell
Samsung Electro-Mechanics Co. Ltd.
Vu Bao Q.
Wong Peter S.
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