高效率单相全桥零电流开关谐振极逆变器  

High-Efficiency Single-Phase Full-Bridge Zero-Current Switching Resonant Pole Inverter

作　　者：王强[1,2] 王有政[1,2] 王天施 刘晓琴[1,2] WANG Qiang;WANG You-zheng;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》2021年第4期788-791,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.51207069);辽宁省教育厅科学研究经费项目(No.L2019017);辽宁省自然科学基金指导计划项目(No.20170540586)。

摘　　要：为改善单相全桥逆变器的效率,提出了一种新型高效率单相全桥零电流开关谐振极逆变器拓扑结构.在桥臂上的辅助谐振电路参与换流的过程中,逆变器的开关器件可实现零电流软关断.当开关器件为绝缘栅双极型晶体管(Insulated Gate Bipolar Transistor,IGBT)时,IGBT实现零电流软关断可使其拖尾电流导致的关断损耗等于零,有利于改善以IGBT作为开关器件的单相全桥逆变器的效率.分析了电路工作流程.实验结果显示出开关器件完成了零电流软切换动作.因此,对于研发以IGBT作为开关器件的高效率单相全桥逆变器,该拓扑结构具有一定的参考价值.In order to improve the efficiency of single-phase full-bridge inverter,a topology of high efficiency single-phase full-bridge zero-current switching resonant pole inverter is proposed.When the auxiliary resonant circuit on the bridge arm works in commutation process of the inverter,the switching devices of the inverter can realize zero-current turn-off.When the switching device is insulated gate bipolar transistor(Insulated Gate Bipolar Transistor,IGBT),zero-current turn-off of IGBT can make the turn-off loss caused by trailing current be equal to zero,which is beneficial to improving the efficiency of single-phase full-bridge inverter with IGBT as switching devices.The working process of the circuit is studied.The experimental results show that the switching devices realize zero-current soft-switching.Therefore,the topology has certain reference value for the research and development of high efficiency single-phase full-bridge inverter with IGBT as switching device.

关 键 词：逆变器 桥臂 高效率 谐振 零电流开关 拖尾电流 

分 类 号：TM464[电气工程—电器]