An Improved Repetitive Control Strategy for LCL Grid-Connected Inverter  

作　　者：Ning He Chenlu Song Feng Gao Cheng Qian 

机构地区：[1]School of Mechatronic Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China

出　　处：《Journal of Beijing Institute of Technology》2022年第4期391-400,共10页北京理工大学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61903291)。

摘　　要：This paper proposes a cascade repetitive control strategy based on odd internal mode,and combines it with proportional-integral(PI)control to establish a compound repetitive control system for improving the quality of grid connected current of LCL grid connected inverter.More specifically,the proposed method could effectively improve the control effect of grid-connected current of LCL inverter,restrain current harmonics and reduce the distortion rate of grid-connected current.Simulation experiment is conducted to verify the proposed repetitive control strategy,and the verification results show that,compared with traditional PI control,the proposed improved compound repetitive control strategy has a higher response speed,and the steady-state and dynamic performance have also been significantly improved.

关 键 词：GRID-CONNECTED inverter LCL filter harmonic suppression repetitive control 

分 类 号：TM464[电气工程—电器] TP273[自动化与计算机技术—检测技术与自动化装置]