零电压零电流开关PWM组合式三电平变换器  

Zero-Voltage and Zero-Current-Switching PWM Combined Three-level Converter

作　　者：刘福鑫[1] 颜佳佳[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》2007年第4期96-102,共7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：提出一种零电压零电流开关PWM组合式三电平变换器,它由半桥三电平变换器与全桥变换器组合而成。该变换器所有开关管的电压应力均为输入电压的一半;可以在很宽的负载范围内实现MOSFET的ZVS,在很宽的负载范围内实现IGBT的ZCS输出滤波器上高频分量小,可以大大减小输出滤波器的体积;可以在三电平和两电平两种工作模式下切换工作,输出整流二极管的电压应力小。该文分析该变换器的工作原理,介绍了其特点,并给出实验结果。This paper proposes a Zero-Voltage and Zero-Current-Switching PWM combined three-level converter （ZVZCS PWM C-TL converter）, which is a combination of a ZVZCS PWM TL converter with a full-bridge converter. The proposed converter has advantages as follows： All power switches suffer only half of the input voltage. The MOSFETs can realize ZVS in a wide load range, and the IGBTs can realize ZCS in a wide load range too, The voltage across the output filter is a three level waveform, which .can reduce the output filter inductance significantly. The voltage stress of the rectifier diodes is reduced too. The operation principle of the proposed converter is analyzed and verified by the experimental results.

关 键 词：电力电子 三电平 组合式变换器 零电压开关 零电流开关 

分 类 号：TM311[电气工程—电机]