Analysis and design considerations of an improved ZVS full-bridge DC-DC converter

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

1471

Lastpage

1476

Abstract

An improved full-bridge (FB) pulse-width-modulated (PWM) converter is proposed featuring zero-voltage-switching (ZVS) of all primary switches in the entire line and load range. Compared to the conventional full bridge dc/dc converter, the proposed converter achieves ZVS with substantially reduced duty-cycle loss and circulating current. The operation principle of the circuit is described and design considerations of the converter are discussed. Finally, the operation and performance of the proposed converter is verified on a 1-kW (54-V/20-A) experimental PWM FB converter prototype operating at 100 kHz from a 300-400 V dc input.

Keywords

DC-DC power convertors; PWM power convertors; zero voltage switching; PWM converter; ZVS full-bridge DC-DC converter; current 20 A; frequency 100 kHz; power 1 kW; pulse-width-modulated converter; voltage 300 V to 400 V; voltage 54 V; zero-voltage-switching; Bridge circuits; DC-DC power converters; Inductance; Leg; Power transformers; Pulse width modulation; Pulse width modulation converters; 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.2010.5433424

Filename

5433424