Single stage power converter with regenerative snubber and power

Details Single stage power converter with regenerative snubber and power Single stage power converter with regenerative snubber and power

1997-10-31

1999-11-09

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363 16, 363 97, 363 20, H02M 3335, H02M 324

Patent

active

059826380

ABSTRACT:
A single stage DC-DC power converter uses a combined power factor control and snubber circuit. The combined circuit uses a small inductor connected at one end to the positive rail of the DC power source, and at the other to the anode of a fast power diode. The cathode of the diode is connected to a node and to the anode of a second fast power diode. The cathode of the second diode is connected to a first terminal of the primary winding of the isolation transformer. The second terminal of the primary winding is connected to one side of a high-frequency switch. The other side of the switch is coupled to the negative rail of the DC power source (ground). A small snubber capacitor is connected between the node and the second terminal of the primary winding. A large storage capacitor is connected between the second terminal of the primary winding and ground.

REFERENCES:
patent: 4184197 (1980-01-01), Cuk et al.
patent: 4274133 (1981-06-01), Cuk et al.
patent: 4977493 (1990-12-01), Smith
patent: 5001620 (1991-03-01), Smith
patent: 5173846 (1992-12-01), Smith
patent: 5331533 (1994-07-01), Smith
patent: 5349284 (1994-09-01), Whittle
patent: 5410467 (1995-04-01), Smith et al.
patent: 5430633 (1995-07-01), Smith
patent: 5600546 (1997-02-01), Ho et al.
patent: 5619404 (1997-04-01), Zak
"Oscillators--Snubber Circuits", cite unknown, (p. 56).

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