具有低能耗辅助电路的三相谐振极逆变器  

Three-Phase Resonant Pole Inverter with Low-Loss Auxiliary Circuit

作　　者：王强[1,2] 曹睿[1,2] 王天施 刘晓琴[1,2] WANG Qiang;CAO Rui;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1期167-170,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：为优化三相逆变器的效率,提出了一种具有低能耗辅助电路的三相谐振极逆变器,其各相桥臂上分别设置了辅助电路.在辅助电路工作时,主开关可实现零电压软切换,辅助开关可实现零电流软切换,使开关损耗明显降低.此外,在辅助电路的谐振状态结束之后,谐振电感中的剩余电能将只通过1个二极管回馈给储能电容,降低了电能回馈时的辅助电路损耗,有利于实现辅助电路的低能耗.说明了电路的工作流程。实验波形显示主开关和辅助开关能完成软切换.该研究成果对于研发高效率三相逆变器具有参考意义.In order to optimize the efficiency of three-phase inverter,a three-phase resonant inverter with low-loss auxiliary circuit is proposed,in which auxiliary circuit is set up on the bridge arm of each phase.When the auxiliary resonant circuit works in the commutation process of the inverter,the main switches can achieve zero-voltage soft-switching,and the auxiliary switches can achieve zero-current soft-switching.The switching loss is obviously reduced.In addition,after the resonance state of the auxiliary circuit ends,the remaining electric energy in the resonant inductance will be fed back to the energy-storage capacitance through only one diode,reducing the loss of the auxiliary circuit when the electric energy is fed back,which is beneficial to the realization of the low-loss of the auxiliary circuit.In this paper,the working flow of the circuit is illustrated.The experimental waveforms show that both the main switch and the auxiliary switch achieve soft-switching.The research findings have reference for the research and development of high-efficiency three-phase inverter.

关 键 词：逆变器 桥臂 辅助电路 谐振 低能耗 软开关 开关损耗 

分 类 号：TM464[电气工程—电器]