A novel ZVS full-bridge converter with auxiliary circuit

Author

Chen, Zhong ; Ji, Biao ; Ji, Feng ; Shi, Lei

Author_Institution

Aero-Power Sci-tech Center, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

fYear

2010

fDate

21-25 Feb. 2010

Firstpage

1448

Lastpage

1453

Abstract

A novel full-bridge (FB) pulse-width-modulated (PWM) converter features zero-voltage-switching (ZVS) of all primary switches in the entire line and load range is described. In contrast to conventional full bridge converter, ZVS is achieved by utilizing energy stored in inductive components of the auxiliary circuit. The auxiliary inductors do not appear as series inductances in the power transfer path, so they do not cause severe voltage ringing across the output rectifier or duty cycle loss. The operation principle of the circuit is analyzed and design considerations of the converter are discussed. Finally, the experimental results from a 1-kW (54-V/20-A) prototype are presented to confirm the operation, validity, and features of the proposed converter.

Keywords

PWM power convertors; zero voltage switching; PWM converter; ZVS full-bridge converter; auxiliary circuit; current 20 A; power 1 kW; power transfer path; pulse-width-modulated converter; voltage 54 V; zero-voltage-switching; Bridge circuits; Circuit analysis; Inductors; Prototypes; Pulse width modulation; Pulse width modulation converters; Rectifiers; Switches; Switching converters; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE

Conference_Location

Palm Springs, CA

ISSN

1048-2334

Print_ISBN

978-1-4244-4782-4

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2010.5433420

Filename

5433420