Parameter Design of Current Double Closed Loop for T-Type Three-Level Grid-Connected Inverter  

作　　者：Tiankui Sun Mingming Shi Xiaolong Xiao Ping He Yu Ji Zhiyuan Yuan 

机构地区：[1]Electric Power Research Institute,State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing,211103,China [2]Zhenjiang Sanxin Power Supply Company,State Grid Jiangsu Electric Power Co.,Ltd.,Zhenjiang,212001,China

出　　处：《Energy Engineering》2023年第7期1621-1636,共16页能源工程（英文）

基　　金：Supported by Science and Technology Projects of State Grid Corporation ofChina(J2022019).

摘　　要：To reduce current harmonics caused by switching frequency,T-type grid-connected inverter topology with LCL filter is adopted.In view of the disadvantages of the slow response speed of the traditional current control and the failure to eliminate the influence of the LCL filter on the grid-connected current by using current PI control alone,a current double closed loop PI current tracking control is proposed.Through the theoretical analysis of the grid-connected inverter control principle,the grid-connected inverter control model is designed,and the transfer functionmodel of each control link is deduced,and the current loop PI regulator is designed at last.The simulation results show that the control strategy is feasible.

关 键 词：T-type inverter active damping current double closed loop 

分 类 号：TM464[电气工程—电器]