A Novel ZVS PWM Phase-shifted Full-bridge Converter with Controlled Auxiliary Circuit

Author

Zhang, Xin ; Chen, Wu ; Ruan, Xinbo ; Yao, Kai

Author_Institution

Coll. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing

fYear

2009

fDate

15-19 Feb. 2009

Firstpage

1067

Lastpage

1072

Abstract

A new topology of full-bridge converter is proposed featuring zero-voltage-switching (ZVS) of active switches over a wide range of input voltage and load. In contrast to conventional techniques, the current through the auxiliary inductor of the proposed converter is controlled by the load current. Therefore, the ZVS operation over the wide conversion range is achieved without significantly increasing full-load conduction loss. The operation principle is described and the design considerations of converter are discussed. Performance of the proposed converter is verified with experiment results on a 1 kW, 100 kHz full-bridge converter.

Keywords

PWM power convertors; bridge circuits; switching convertors; zero voltage switching; ZVS PWM phase-shifted full-bridge converter; active switches; auxiliary circuit control; auxiliary inductor; frequency 100 kHz; full-load conduction loss; power 1 kW; zero-voltage-switching; Bridge circuits; Capacitors; Inductors; Leg; Pulse width modulation; Pulse width modulation converters; Switches; Switching circuits; Switching converters; Zero voltage switching; Auxiliary inductor; Full bridge converter; Soft switching; Zero-voltage-switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE

Conference_Location

Washington, DC

ISSN

1048-2334

Print_ISBN

978-1-4244-2811-3

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2009.4802795

Filename

4802795