Circuit arrangement

Details Circuit arrangement Circuit arrangement

1995-06-02

1997-04-08

Krishnan, Aditya

Electric power conversion systems

Current conversion

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

H02M 3335

Patent

active

056194013

ABSTRACT:
The invention comprises a circuit arrangement with a first direct voltage to an alternating voltage transforming unit, an alternating voltage to a second direct voltage transforming unit, and a second direct voltage smoothing filter, connectable to a load, whereby the first direct voltage to an alternating voltage transforming unit has an inductance whose one connection is connected to a mutual connecting point for a two series connected rectifiers, and wherein the alternating voltage to a second direct voltage transforming unit includes a parallel related rectifier. A back current through one of two parallel related rectifiers, formed at the switching period of the alternating voltage, and a therefrom originating power contribution to the inductance, is redistributed by a power contribution redistributing organ, belonging to the transforming unit, in order to reduce the losses appearing, for instance in the series connected rectifiers.

REFERENCES:
patent: 4217632 (1980-08-01), Bardos et al.
patent: 4802078 (1989-01-01), Hill
patent: 5172308 (1992-12-01), Tohya
patent: 5198969 (1993-03-01), Redl et al.
Bill Andreycak, "Unitrode Integrated Circuits", Phase Shifted, Zero Voltage Transition Design Considerations and the UC3875 PWM Controller, pp. 9-393 to 9-406.

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