Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1997-09-17
1999-03-02
Hecker, Stuart N.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
H02M 3335
Patent
active
058779450
ABSTRACT:
An asymmetrical half-bridge converter, a method of operating the same and a power supply that incorporates either the converter or the method. In one embodiment, the converter includes: (1) a power transformer that receives AC input power into a primary winding thereof and transfers the AC input power into first and second secondary windings thereof, the first secondary winding having a secondary to primary turns-ratio smaller than the second secondary winding, (2) an auxiliary inductor coupled across the first and second secondary windings and (3) first and second rectifying diodes having inputs coupled to outer taps of the first and second secondary windings, an output of the converter derived from outputs of the first and second rectifying diodes and a center tap between the first and second secondary windings, an average current in the first secondary winding increased to cause the first and second secondary windings and the auxiliary inductor to share a DC bias current developed in the converter during an operation thereof.
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Hecker Stuart N.
Lucent Technologies - Inc.
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