辅助电路损耗低的并联谐振直流环节逆变器  

Parallel Resonant DC Link Inverter with Low-Loss Auxiliary Circuit

作　　者：王强[1,2] 李森[1,2] 王天施 刘晓琴[1,2] WANG Qiang;LI Sen;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》2022年第11期2813-2816,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)。

摘　　要：为使逆变器工作在高效率状态,本文设计了辅助电路损耗低的并联谐振直流环节逆变器,仅在直流环节电压上升的过程中,触发位于直流环节的辅助电路的谐振;在直流环节电压下降过程中和负载电流瞬时值较低时,辅助电路不发生谐振,这有利于实现辅助电路的低功耗.说明了电路的工作流程.实验波形显示出开关器件取得了软切换.因此,该电路结构有利于优化逆变器效率.In order to realize efficient work of the inverter,a parallel resonant dc link inverter with low-loss auxiliary circuit is proposed.The resonance of the auxiliary circuit on the dc link is triggered only in the rising process of the voltage across the dc link.In the descending process of the voltage across the dc link,or when the instantaneous value of load current is low,the auxiliary circuit does not resonate,which is beneficial to realizing the low-loss of the auxiliary circuit.The working process of the circuit is illustrated.The experimental results show that the switching device has achieved soft switching.Therefore,this topology structure is instrumental in optimizing the efficiency of the inverter.

关 键 词：逆变器 直流环节 辅助电路 零电压切换 低功耗 谐振 

分 类 号：TM464[电气工程—电器]