具有软开关功能的三相谐振直流环节逆变器  

Three-Phase Resonant DC Link Inverter with Soft-Switching Function

作　　者：王强[1,2] 郭国先[1,2] 王天施 刘晓琴[1,2] WANG Qiang;GUO Guo-xiang;WANG Tian-shi;LIU Xiao-qin(College of Information and Control Engineering,Liaoning Shihua University,Fushun,Liaoning 113001,China;National Experimental Teaching Demonstration Center of Petrochemical Process Control,Fushun,Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学信息与控制工程学院,辽宁抚顺113001 [2]辽宁石油化工大学石油化工过程控制国家级实验教学示范中心,辽宁抚顺113001

出　　处：《电子学报》2019年第9期1994-1997,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.51207069);辽宁省自然科学基金指导计划项目(No.20170540586);辽宁石油化工大学国家级科研项目培育基金(No.2016PY-016)

摘　　要：为实现三相逆变器节能运行,提出一种具有软开关功能的三相谐振直流环节逆变器.直流侧的辅助谐振电路将参与换流过程,使直流环节电压在桥臂上的主开关动作之前变化到零,主开关能完成零电压软切换动作,通过降低开关损耗来实现逆变器节能运行.分析了1个开关周期内的电路工作流程.实验结果显示开关器件动作时处于软切换.因此,该辅助谐振电路结构对于研发节能型三相逆变器具有参考价值.In order to realize the energy-saving operation of three-phase inverter,a novel three-phase resonant DC(Direct Current) link inverter with soft-switching function is proposed.The auxiliary resonant circuit on the DC side can participate in the commutation process,making the DC link voltage change to zero before the main switches act on the bridge arm.Therefore,the main switches can achieve the zero-voltage soft-switching action,and realize the energy-saving operation of the inverter by reducing the switching loss.The workflows of the circuit are analyzed.The experimental results show that the switching devices are in the state of soft switching.The structure of the auxiliary resonant circuit has reference value for research and development of an energy-saving three-phase inverter.

关 键 词：节能 逆变器 辅助谐振电路 软开关 开关损耗 

分 类 号：TM464[电气工程—电器]