A novel full-bridge ZVZCS PWM DC/DC converter with a secondary clamping circuit

Author

Choo, Byeong-Ho ; Lee, Dong-Yun ; Yoo, Sang-Bong ; Hyun, Dong-seok

Author_Institution

Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea

Volume

2

fYear

1998

fDate

17-22 May 1998

Firstpage

936

Abstract

This paper proposes a novel secondary clamping circuit for soft switching FB (full-bridge) PWM DC/DC converter. The proposed circuit eliminates the reflected output current which is reflected from the secondary side to the primary side so that it reduces the needless conduction losses of the primary side during the current circulating mode. Also, it ensures the zero-voltage/zero-current switching of the leading/lagging leg switches. The characteristics of the proposed clamping circuit are investigated and the validity is verified by the simulation and the experimental results

Keywords

DC-DC power convertors; PWM power convertors; bridge circuits; losses; switching circuits; conduction losses reduction; current circulating mode; full-bridge ZVZCS PWM DC/DC converter; leading/lagging leg switches; reflected output current elimination; secondary clamping circuit; soft switching; zero-current switching; zero-voltage switching; Circuits; Clamps; DC-DC power converters; Inductors; Insulated gate bipolar transistors; Leg; Power semiconductor switches; Pulse width modulation; Pulse width modulation converters; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE

Conference_Location

Fukuoka

ISSN

0275-9306

Print_ISBN

0-7803-4489-8

Type

conf

DOI

10.1109/PESC.1998.703115

Filename

703115