Saturable inductor-assisted ZVS-PWM full-bridge high-frequency link DC-DC converter operating at lowered switching and conduction losses

Author

Kim, Y.J. ; Michihira, M. ; Hamada, S. ; Nakaoka, M.

Author_Institution

Kobe Univ., Japan

fYear

1994

fDate

26-28 Oct 1994

Firstpage

483

Lastpage

488

Abstract

This paper presents a novel zero-voltage soft-switching phase-shifted PWM DC-DC full-bridge power converter using power MOSFETs which employs a tapped inductor as the output low-pass filter. By using the tapped low-pass filter inductor and saturable reactors in the rectifier stage, the freewheeling current through the transformer and its primary side circuit can be effectively minimized. In addition, the switching and conduction losses of the DC-DC power converter are substantially reduced as low as those of traditional hard-switching PWM power converters. The principle of this converter operation and analysis are illustrated and discussed. The cost effective performances of the power converter is experimentally confirmed with a 500 W 100 kHz breadboard

Keywords

DC-DC power convertors; PWM power convertors; bridge circuits; low-pass filters; power MOSFET; power filters; power transformers; rectifying circuits; switching circuits; 100 kHz; 500 W; DC-DC power converter; PWM; ZVS; breadboard; conduction losses; cost effective; freewheeling current; full-bridge HF link; output low-pass filter; performance; power MOSFETs; primary side circuit; rectifier stage; saturable reactors; soft-switching; switching losses; tapped inductor; transformer;

fLanguage

English

Publisher

iet

Conference_Titel

Power Electronics and Variable-Speed Drives, 1994. Fifth International Conference on

Conference_Location

London

Type

conf

DOI

10.1049/cp:19941013

Filename

341680