Power converter

Details Power converter Power converter

1982-01-18

1983-10-18

Shoop, William M.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 21, 363 97, H02P 1300

Patent

active

044109369

ABSTRACT:
A switching power converter with high conversion efficiency has been found. The converter has a DC power source (1), a switching element (2), a transformer (3) so that said DC power source (1) supplies the primary power to the transformer (3) through the switching element (2). A rectifier and an output filter circuit are provided at the secondary side of the transformer (3). A parallel circuit with a capacitor (12) and a coil (13) is inserted in the primary current path, and a control circuit (14) controls the ON and/or OFF status of said switching element (2) so that the switching element (2) is turned to the ON status when the current in the coil (13) reaches a predetermined value which depends upon the output power of the present power converter, and said switching element (2) is turned to the OFF status after the current in said switching element (2) reaches zero. Since the current in the switching element is zero when the switching element is turned to the OFF status, no power loss occurs in the OFF transition, and thus, the conversion efficiency is improved.

REFERENCES:
patent: 2922032 (1960-01-01), Haas et al.
patent: 3989995 (1976-11-01), Peterson
patent: 4187536 (1980-02-01), Govaert et al.
patent: 4328537 (1982-05-01), Schmidtner et al.

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