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Implementation strategy for soft switching PFC with low output voltage

哈尔滨工业大学学报（英文版）2006，Vol.13Issue(6)：644-648,5.

Implementation strategy for soft switching PFC with low output voltage

作者信息

1. Dept. of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China;Dept. of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China;Dept. of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China
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摘要

Abstract

This paper proposes a novel implementation strategy for soft switching PFC whose circuit is simple and can achieve low voltage output directly. The main circuit adopts current mode full-bridge converter and all the power switches can realize ZCS or ZVS in the way of phase-shifted control, using the leakage inductance of the transformer, the junction capacitor of the switches and the stored energy of the output capacitor. The problems such as the function of phase-shifted link in control circuit, the implementation conditions of soft switching and bias restrained are analyzed. The adoption of constant frequency PWM control makes the design of the input and output filter link and the high frequency transformer simple. The transformation ratio regulation so as to achieve low voltage output and electrical insulation can be realized by using high frequency transformer.

关键词

power factor correction/soft switching/full-bridge/low voltage

Key words

power factor correction/soft switching/full-bridge/low voltage

分类

信息技术与安全科学

引用本文复制引用

..Implementation strategy for soft switching PFC with low output voltage[J].哈尔滨工业大学学报（英文版）,2006,13(6):644-648,5.

基金项目

Sponsored by the Power Electronics Science and Education Development Program of Delta Environmental & Educational Foundation ( Grant No.DREO2006010). （ Grant No.DREO2006010）

哈尔滨工业大学学报（英文版）

ISSN：1005-9113

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