A novel ZVS-PWM half-bridge converter

Author

Harada, Kazurou ; Ishihara, Yoshiyuki ; Todaka, Toshiyuki

Author_Institution

Dept. of Electron., Doshisha Univ., Kyoto, Japan

fYear

1994

fDate

30 Oct-3 Nov 1994

Firstpage

588

Lastpage

593

Abstract

A novel zero-voltage-switching (ZVS) PWM half-bridge power converter is presented. The proposed power converter consists of a conventional half-bridge power converter and two added switches in series with the secondary rectifier diodes. This power converter is controlled by PWM of the main switches using a novel switching sequence with constant switching frequency. The zero voltage switching of the main switches is maintained by partial resonance during the interval where both the main switches are off, and the secondary switches turn on and off with zero voltage and zero current. The operation of this power converter is described by use of equivalent circuits and is verified by experiments

Keywords

PWM power convertors; bridge circuits; circuit resonance; circuit testing; equivalent circuits; network analysis; power semiconductor diodes; power semiconductor switches; rectifiers; rectifying circuits; switching circuits; ZVS PWM half-bridge power converter; constant switching frequency; equivalent circuits; experiments; partial resonance; secondary rectifier diodes; switches; switching sequence; zero-voltage-switching; Diodes; Equivalent circuits; Pulse width modulation; Pulse width modulation converters; Rectifiers; Resonance; Switches; Switching converters; Switching frequency; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1994. INTELEC '94., 16th International

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-2034-4

Type

conf

DOI

10.1109/INTLEC.1994.396592

Filename

396592