A novel full-bridge converter achieving ZVS over wide load range with a passive auxiliary circuit

Author

Chen, Wu ; Ruan, Xinbo ; Ge, Junji

Author_Institution

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

fYear

2010

fDate

12-16 Sept. 2010

Firstpage

1110

Lastpage

1115

Abstract

A novel full-bridge converter is proposed in this paper, which achieves ZVS over the entire conversion range with a passive auxiliary circuit. The stored energy in the auxiliary circuit is minimal under the full-load condition and it progressively increases as the load current decreases. The proposed auxiliary circuit is passive, simple and can be viewed as an add-on to the conventional ZVS FB converter. The steady analysis and operating principle are demonstrated. Based on the analysis, a criterion of optimal design is given. A 1 kW full-bridge converter is built to verify the effectiveness of the proposed converter.

Keywords

power convertors; zero voltage switching; conventional ZVS FB converter; conversion range; full-bridge converter; full-load condition; load current; operating principle; passive auxiliary circuit; power 1 kW; steady analysis; stored energy; Capacitors; Converters; Inductance; Inductors; Leg; Windings; Zero voltage switching; Full-bridge converter; auxiliary circuit; duty cycle loss; zero-voltage-switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2010 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

978-1-4244-5286-6

Electronic_ISBN

978-1-4244-5287-3

Type

conf

DOI

10.1109/ECCE.2010.5617849

Filename

5617849