Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1995-06-19
1997-03-11
Sterrett, Jeffrey L.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 97, 363131, H02M 3335
Patent
active
056108044
ABSTRACT:
A first energy transfer circuit transfers the energy that stores in the transformer while the first switching element is ON, to the output side through an output winding of the transformer during the subsequent OFF period. A second switching element and the output winding of the second energy transfer circuit are connected in a circuit loop that runs through an input terminal, an output terminal, the load, the other output terminal and the other input terminal and transfers energy from the input side to the output side via the output winding when the second switching element is ON. The control circuit controls the ON period and the ON timing of the first switching element and the second switching element. A stable output voltage relative to a wide range of input voltages is obtained and, at the same time, a power factor correction is achieved.
REFERENCES:
patent: 4549254 (1985-10-01), Kissel
patent: 4607319 (1986-08-01), Assow et al.
patent: 4617620 (1986-10-01), Speranza
patent: 4652984 (1987-03-01), van der Akker et al.
patent: 4684871 (1987-08-01), Plagge
patent: 4731719 (1988-03-01), Nelson
patent: 4965506 (1990-10-01), Algra et al.
patent: 5442536 (1995-08-01), Zimmermann
Sterrett Jeffrey L.
TDK Corporation
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