Series resonant converter having a resonant snubber

Details Series resonant converter having a resonant snubber Series resonant converter having a resonant snubber

1993-12-21

1995-08-01

Stephan, Steven L.

Electric power conversion systems

Current conversion

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

363132, H02M 3335

Patent

active

054384982

ABSTRACT:
A fixed frequency, series resonant converter having a resonant snubber comprising an inductor and capacitor connected across a tank circuit of the converter. An optimum amount of inductance in the resonant snubber minimizes the degree of "shoot-thru," or conduction through a body-diode within a transistor switch of the converter caused by ringing, which allows for nearly sinusoidal current to be provided to a full bridge high voltage rectifier enabling the power converter to operate at a higher frequency. An alternate embodiment applies the resonant snubber only across a selected transistor switch.

REFERENCES:
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patent: 4691273 (1987-09-01), Kuwata et al.
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patent: 5075836 (1991-12-01), Suzuki et al.
patent: 5157593 (1992-10-01), Jain
patent: 5278748 (1994-01-01), Kitajima
"Resonant Mode Converter Topologies--Additional Topics," Bob Mammano, Unitrode Regulated Power Supply Design Seminar Manual, Copyright 1990 Unitrode Corporation, pp. 6-1 to 6-6.
"Series Resonant Converter With Clamped Tank Capacitor Voltage," B. S. Jacobson and R. A. Diperna, Raytheon Company, 1990 IEEE, pp. 137-146.

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