新型零电压零电流谐振极型软开关逆变器  

Novel Zero-voltage and Zero-current Resonant Pole Soft-switching Inverter

作　　者：王强[1] 张化光[1] 褚恩辉[1] 刘秀翀[1] 侯利民[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁省沈阳市110004

出　　处：《中国电机工程学报》2009年第27期15-21,共7页Proceedings of the CSEE

基　　金：国家863高技术基金项目(2006AA04Z183)~~

摘　　要：提出一种新型的零电压零电流谐振极型软开关逆变器,可以在主功率器件开通和关断时,同时实现零电压和零电流,因此对于内部电容不能忽略的器件,可减小容性开通损耗,当绝缘栅双极型晶体管(insulated gate bipolar transistor,IGBT)作为主功率器件时,也可减小拖尾电流引起的损耗。主功率器件真正做到了无损耗换相。此外,续流二极管的反向恢复损耗被降低到最小,辅助开关也实现了零电流开关。对其工作原理进行分析,给出不同工作模式下的等效电路图和回路的参数设计方法。制作一个1kW的实验样机,通过实验结果验证该软开关逆变器的有效性。A novel zero-voltage and zero-current resonant pole soft-switching inverter was proposed to achieve zero-voltage and zero-current switching simultaneously when main power devices turn-on and turn-off. Therefore, turn-on capacitive losses could be reduced for devices which the intrinsic capacitor value cannot be neglected. Additionally losses caused by the tail current can also be reduced, when IGBTs are used as main switches. The commutations of the main power devices occur truly without losses. Furthermore, reverse recovery losses of main diodes are minimized, and auxiliary switches commutate at zero current. The equivalent circuits at different operation modes ,the analysis of the circuit and parameter design method were presented. A 1 kW laboratory prototype had been built. Experimental results were proposed to confirm validity of soft-switching inverter presented.

关 键 词：软开关 反向恢复 零电流关断:零电压开通 谐振极 

分 类 号：TM464[电气工程—电器]