Zero-voltage-switching realized by magnetizing current of transformer in push-pull current-fed DC-DC converter

Author

Shoyama, Masahito ; Harada, Koosuke

Author_Institution

Dept. of Electron., Kyushu Univ., Fukuoka, Japan

fYear

1993

fDate

20-24 Jun 1993

Firstpage

178

Lastpage

184

Abstract

A new type of zero-voltage-switched (ZVS) push-pull current-fed DC-DC converter with two synchronous rectifiers in the secondary circuit is presented. ZVS is realized using the magnetizing current of the transformer as a constant current source during the commutation. The output voltage is controlled by PWM (pulse-width modulation) with a constant switching frequency. The circuit operation is described using equivalent circuits. The steady-state and dynamic characteristics are analyzed and confirmed experimentally

Keywords

DC-DC power convertors; PWM power convertors; commutation; equivalent circuits; magnetisation; rectifiers; rectifying circuits; switching circuits; transformers; voltage control; PWM; circuit operation; commutation; constant current source; constant switching frequency; dynamic characteristics; equivalent circuits; magnetizing current; output voltage control; pulse-width modulation; push-pull current-fed DC-DC converter; secondary circuit; steady state characteristics; synchronous rectifiers; transformer; zero voltage switching; DC-DC power converters; Equivalent circuits; Pulse transformers; Pulse width modulation; Rectifiers; Space vector pulse width modulation; Steady-state; Switching frequency; Voltage control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1993. PESC '93 Record., 24th Annual IEEE

Conference_Location

Seattle, WA

Print_ISBN

0-7803-1243-0

Type

conf

DOI

10.1109/PESC.1993.471921

Filename

471921