3-phase input type of switching power circuit

Details 3-phase input type of switching power circuit 3-phase input type of switching power circuit

1995-03-07

1996-04-09

Nguyen, Matthew V.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 89, H02M 706, H02M 542

Patent

active

055067662

ABSTRACT:
Each of the primary coils in the three transformers is assigned to one phase of the 3-phase input. A plurality of input diodes, with the primary coils, constitutes a 3-phase full wave rectifying circuit, which in turn consists of two Y- connection circuits. The main circuit of a switching element is connected between the common connecting points of the Y-connection circuits. An output rectifying circuit is connected to each of the secondary coils in the transformers to rectify, smooth and output the voltage generated on the secondary side due to the flyback effect. By using one main switching element, the input current waveform can be maintained as a sine wave, and variable adjustment of the output voltage can be performed, achieving a reduction in the capacity of the output side capacitor.

REFERENCES:
patent: 4667282 (1987-05-01), Peterson
patent: 4684818 (1987-08-01), Carlson
patent: 4807106 (1989-02-01), Baker et al.
patent: 4808866 (1989-02-01), Kawazoe et al.

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