采用辅助谐振网络实现零电压开关的移相控制全桥变换器  

A Novel Phase-Shifted Zero-Voltage-Switched Full-Bridge ConverterEmploying an Auxiliary Resonant Net

作　　者：阮新波[1] 严仰光[1] 

机构地区：[1]南京航空航天大学

出　　处：《电工技术学报》1998年第2期47-52,共6页Transactions of China Electrotechnical Society

摘　　要：移相控制全桥变换器能够实现开关管的零电压开关，但滞后桥臂难度很大。本文提出了电流增强原理，在此基础上，提出了一种新颖的移相控制全桥变换器，它是在传统的全桥变换器中加入了一个辅助谐振网络，来帮助实现滞后桥臂开关管的零电压开关。在文中，对这种变换器的工作原理作了分析，仿真与实验结果验证了该变换器的可行性。Phase - shifted converter realizes zero - voltage - switching with the use of leakage inductor of the main transformer, however, the realization of ZVS for lagging bridge leg is difficult. This paper pro- poses a current enhance principle, and based on which, a novel phase - shifted converter is proposed which adds an auxiliary resonant net to the conventional full - bridge converter to help the lagging bridge leg to realize ZVS . The principle and parameter design of the novel converter are analyzed, and simula- tion and experimental results verified the principle .

关 键 词：变换器 谐振网络 零电压开关 移相控制 

分 类 号：TN624[电子电信—电路与系统]