加箝位二极管的零电压开关PWM复合式全桥三电平变换器  

ZVS PWM HYBRID FULL-BRIDGE THREE-LEVEL CONVERTER WITH CLAMPING DIODES

作　　者：陈武[1] 阮新波[1] 

机构地区：[1]南京航空航天大学航空电源重点实验室,江苏省南京市210016

出　　处：《中国电机工程学报》2005年第20期21-25,共5页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50177013);江苏省自然科学基金项目(BK2003419)~~

摘　　要：零电压开关PWM复合式全桥三电平变换器(ZVSPWMH-FBTL变换器)利用变压器的漏感和开关管的结电容可以实现开关管的ZVS,但是输出整流管仍然存在反向恢复带来的尖峰电压。为了解决这个问题,该文提出一种新的ZVSPWMH-FBTL变换器,它在基本的ZVSPWMH-FBTL变换器中增加两个二极管,能够有效地消除在3L模式和2L模式下输出整流管的尖峰电压,同时保留基本ZVSPWMH-FBTL变换器的所有优点。该文分析这种新的变换器的工作原理,并在一个1200W的原理样机上进行验证,最后给出实验结果。Zero-voltage-switching PWM hybrid full-bridge three-level converter （ZVS PWM H-FB TL converter） realizes ZVS for the switches with the use of the leakage inductance and the output capacitors of the switches, however the rectifier diodes still suffer from the reverse recovery which results in oscillation and voltage spike. In order to solve this problem, this paper proposes a novel ZVS PWM H-FB TL converter, which introduces two clamping diodes to the basic TL converter to eliminate the oscillation and clamp the rectified voltage to the reflected input voltage. The operation principle of the novel converter is analyzed and verified by a prototype converter. The experimental results are also included in this paper.

关 键 词：电力电子 箝位二极管 复合式全桥三电平变换器 零电压开关 

分 类 号：TM311[电气工程—电机]