Mechanism and suppression countermeasure of voltage oscillation for full bridge converter

Author

Chen, Zhe ; Shi, Li-Hua ; Ji, Fei ; Liu, Siyuan

Author_Institution

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

Volume

5

Issue

8

fYear

2012

fDate

9/1/2012 12:00:00 AM

Firstpage

1535

Lastpage

1543

Abstract

A phase-shift full-bridge zero-voltage-switching (ZVS) pulse-width-modulated (PWM) converter with commutation capacitor and inductor-capacitor (LC) auxiliary circuit is proposed. This converter contains the advantages of small rectifier voltage oscillation as well as no duty cycle loss, and realises ZVS for all primary switches over a wide load range. In this study, the mechanism of the rectifier voltage oscillation is discussed in detail. The operation principle of the circuit is described and design considerations of the converter are discussed. Finally, the experimental results from a 650 W/28 V, 100 kHz prototype are given to confirm the operation, validity and features of the proposed converter.

Keywords

PWM power convertors; capacitors; inductors; rectifying circuits; switching convertors; zero voltage switching; LC auxiliary circuit; PWM converter; ZVS; commutation capacitor; frequency 100 kHz; full bridge converter; inductor-capacitor auxiliary circuit; phase-shift full-bridge zero-voltage-switching; power 650 W; primary switches; pulse-width-modulated converter; small rectifier voltage oscillation; voltage 28 V; voltage oscillation suppression;

fLanguage

English

Journal_Title

Power Electronics, IET

Publisher

iet

ISSN

1755-4535

Type

jour

DOI

10.1049/iet-pel.2011.0502

Filename

6340690