Parameter design and experiment of the improved ZVT-PWM Buck converter

被引：0

作者：

Sun, Hui-Xian ^{[1
]}

Wang, Qun ^{[1
]}

机构：

[1] National University of Defense Technology, Cliangslm 410111, China

来源：

Dianli Zidonghua Shebei / Electric Power Automation Equipment | 2005年 / 25卷 / 08期

关键词：

Capacitors - Electric currents - Electric network analysis - Problem solving - Pulse width modulation - Switching networks;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

To solve the problems of auxiliary switch's hard switching and internal circulating current existing in traditional ZVT(Zero-Voltage-Transition) PWM Buck converter,an improved converter is proposed,in which a snubber capacitor and a diode in series with the resonant inductor are added. Its operational principle is analyzed and each operational stage is introduced briefly. The circuit parameters are designed with experimental study. Results prove that the auxiliary switch achieves near zero-voltage turn-off and the internal circulating current is eliminated,the efficiency of the improved converter is hence enhanced.

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