Resonant power supplies

Details Resonant power supplies Resonant power supplies

1992-08-05

1995-09-12

Stephan, Steven L.

Electric power conversion systems

Current conversion

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

363 97, 363133, 219624, 219664, H02M 3335

Patent

active

054503051

ABSTRACT:
This resonant power supply produces a varying magnetic field from a resonant inductor. Two active switches drive, but remain outside, a resonant circuit, also including resonant capacitor. A phase-splitting transformer provides, via a decoupling inductor, one connection for a power supply; the return is through the active switches, which are either off or are from time to time driven alternately by the controller so as to maintain the resonant current in the resonant circuit. Applications include induction heating and induction hobs for cooking, and also a power source for inductively powered vehicles (or other inductively powered devices) adjacent to an inductive pathway.

REFERENCES:
patent: 3775577 (1973-11-01), Peters, Jr.
patent: 3887781 (1975-06-01), Peters, Jr.
patent: 4035745 (1977-07-01), Doetsch
patent: 4364045 (1982-12-01), Spiegel
patent: 4426564 (1984-01-01), Steigerwald et al.
patent: 4574342 (1986-03-01), Runyan
patent: 4595814 (1986-06-01), Ogino et al.
patent: 5121314 (1992-06-01), Cathell et al.
patent: 5293308 (1994-03-01), Boys et al.
Kassakian, et al., Principles of Power Electronics, 1991.

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