Novel zero-voltage and zero-current-switching (ZVZCS) full bridge PWM converter using a simple auxiliary circuit

Author

Cho, Jung G. ; Baek, Ju W. ; Jeong, Chang Y. ; Yoo, Dong W. ; Lee, Hong S. ; Rim, Geun H.

Author_Institution

Power Electron. Res. Div., Korea Electrotechnol. Res. Inst., Changwon, South Korea

Volume

2

fYear

1998

fDate

15-19 Feb 1998

Firstpage

834

Abstract

A novel zero voltage and zero current switching (ZVZCS) full bridge (FB) PWM power converter is presented to simplify the circuits of the previously presented ZVSCS power converters. A simple auxiliary circuit which consists of one small capacitor and two small diodes is added in the secondary to provide ZVZCS conditions to primary switches as well as to clamp secondary rectifier voltage. The additional clamp circuit for the secondary rectifier is not necessary. The auxiliary circuit includes neither lossy components nor additional active switches which makes the proposed power converter efficient and cost effective. The principle of operation, features and design considerations are illustrated and verified on a 2.5 kW, 100 kHz IGBT-based experimental circuit

Keywords

DC-DC power convertors; PWM power convertors; bridge circuits; insulated gate bipolar transistors; power bipolar transistors; power semiconductor switches; switching circuits; 100 kHz; 2.5 kW; auxiliary circuit; capacitor; cost-effectiveness; design considerations; diodes; efficiency; full-bridge DC/DC PWM power converter; operating features; operating principles; power IGBT switches; primary switches; secondary rectifier voltage clamping; zero current switching; zero voltage switching; Bridge circuits; Clamps; Pulse width modulation; Pulse width modulation converters; Rectifiers; Switches; Switching circuits; Switching converters; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1998. APEC '98. Conference Proceedings 1998., Thirteenth Annual

Conference_Location

Anaheim, CA

Print_ISBN

0-7803-4340-9

Type

conf

DOI

10.1109/APEC.1998.653995

Filename

653995