Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1983-03-24
1985-12-17
Wong, Peter S.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 40, 363133, H02M 3335
Patent
active
045595909
ABSTRACT:
A DC-DC converter includes first and second switches to be opened and closed at mutually exclusive times at a predetermined frequency. The first switch is connected to an inductor and a transformer primary winding so that a first current component from a DC input supply flows through it via the inductor. A second current component having a sinusoidal component flows through the first switch in response to discharge of energy stored in a resonant circuit coupled to the transformer. The second component begins approximately simultaneously with closure of the first switch. The second switch, when closed, is connected so that a bi-directional current component flows through it in response to energy stored in the inductor. The rectifier is connected between the secondary winding and the load so the secondary winding supplies substantial current to the load.
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patent: 3828239 (1974-08-01), Nagai et al.
patent: 4007413 (1977-02-01), Fisher et al.
patent: 4184197 (1980-01-01), Cu'k et al.
patent: 4257087 (1981-03-01), Cu'k
patent: 4274133 (1981-06-01), Cu'k et al.
patent: 4292544 (1981-09-01), Ishii et al.
patent: 4449175 (1984-05-01), Ishii et al.
Cole Stanley Z.
Jones Judson H.
Lowe Allan M.
Varian Associates Inc.
Wong Peter S.
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