Regulated resonant converter

Details Regulated resonant converter Regulated resonant converter

1997-03-11

1999-08-10

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363 98, 363 37, H02M 3335, H02M 324

Patent

active

059368519

ABSTRACT:
A regulated resonant converter comprises a series resonant circuit through which current is switched alternately in opposite directions by a pair of switching transistors, a rectifier via which the switching transistors are fed with d.c. current from an a.c. mains supply input, operation of the switching transistors being controlled by signals generated in a control circuit, in dependence upon a fed-back sample of a convertor output developed in the resonant circuit in accordance with the amplitude of which regulation is effected, and a cross-over voltage associated with current reversal in an inductor which forms a part of the resonant circuit, which cross-over voltage is fed to the control circuit via a differentiator whereby switch operation is effectively enhanced.

REFERENCES:
patent: 5057698 (1991-10-01), Widener et al.
patent: 5111133 (1992-05-01), Poulo et al.
patent: 5267138 (1993-11-01), Shore
patent: 5448466 (1995-09-01), Erckert
patent: 5625538 (1997-04-01), Lee et al.

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