带饱和电感的移相全桥零电压开关PWM变换器  

Application of a PS-FB-ZVS-PWM Converter with Saturable Inductor

作　　者：李剑[1] 康勇[1] 孟宇[1] 陈坚[1] 

机构地区：[1]华中理工大学,武汉430074

出　　处：《电力电子技术》2000年第2期13-15,25,共4页Power Electronics

摘　　要：介绍了带饱和电感的移相全桥零电压开关PWM变换器的工作原理。与传统电路相比，它具有较宽的零电压开关负载范围、较小的环流能量和较小的占空比损失。给出了在一台三相交流380V输入、27V／4．5kW输出电源上的仿真和实验结果。实验表明，该电路具有开关损耗低、工作频率恒定、可靠性高的优点。The paper introduces the operation principle of a PSFB-ZVS-PWM converter with saturable inductor isproposed. The novel converter has advantages such as wide ZVS load range, low circulating energy and low duty cycle losscomparing to the traditional PSFB-ZVS-PWM converter. The simulative and experimental results on a 3Φ 380V AC input, 27V/4. 5kW output power supply are given. Experiment has proved the novel converter has advantages of lowswitching losses, contant frequency operation and high reliability.

关 键 词：变换器 脉宽调制 移相 零电压开关 饱和电感 PWM 

分 类 号：TN624[电子电信—电路与系统] TM761[电气工程—电力系统及自动化]