一种新型移相控制FB-ZVZCS-PWM变换器  

A Novel FB-ZVZCS PWM Converter Based on Phase-shifted Control

作　　者：肖玥[1] 

机构地区：[1]长沙电力职业技术学院,电力系,湖南长沙410131

出　　处：《电力电子技术》2011年第9期85-87,共3页Power Electronics

摘　　要：提出了一种全新的全桥零电压零电流(FB-ZVZCS)拓扑,该拓扑能够在极宽的负载范围内稳定地实现超前臂和滞后臂的零电压零电流开关,并且辅助电流储能小于以往提出的各种结构,因此电流应力也大大减小。对其工作原理进行了详细分析,并给出了相关参数计算。同时建立了该新型拓扑的小信号模型,利用Matlab对其动态性能进行了一系列分析,最后通过实验样机证明了分析和设计的准确性,实验结果表明系统具有良好的动态性能和较小的电流应力。A novel full bridge（FB）-zero voltage zero current switching（ZVZCS） converter is proposed.The topology can achieve an extreme wide load range under soft switching for both leading and lagging legs,as well as minimized the pre-stored energy of main circuit,so the current stress can be diminished,then the operation principle and key parameter are analyzed and discussed.Meanwhile the small signal model of this topology is derived and the dynamic performance is analyzed by Matlab.At the end,the experimental results verify the accuracy of the analysis and design consideration.It shows a high efficiency in the dynamic performance and low current stress.

关 键 词：变换器 软开关 全桥拓扑 小信号分析 

分 类 号：TM46[电气工程—电器]