基于准PR+改进重复控制的具有滤波功能的光伏逆变器  

Photovoltaic Inverter with Filtering Function Based on Quasi PR+Improved Repetitive Control

作　　者：张超凡 高亚栋 ZHANG Chaofan;GAO Yadong(Shanghai University of Electric Power,Shanghai 200090,China;Zhejiang Huayun Electric Power Engineering Design Consulting Co.,Ltd.,Hangzhou,Zhejiang 310014,China)

机构地区：[1]上海电力大学,上海200090 [2]浙江华云电力工程设计咨询有限公司,浙江杭州310014

出　　处：《上海电力大学学报》2023年第4期317-324,338,共9页Journal of Shanghai University of Electric Power

摘　　要：由于光伏逆变器与有源滤波器具有相同的拓扑结构,因此将光伏逆变器与有源滤波器相结合有利于提高光伏并网效率。准比例谐振(PR)控制动态响应能力强,但不能实现无静差追踪,而重复控制能够进行无静差跟踪,但存在延时问题且动态响应慢。将准PR控制与重复控制结合组成复合控制,在实现无静差追踪的同时又具有良好的动态特性,并分析了基于瞬时无功功率理论的i p i q谐波检测。采用MATLAB/Simulink软件进行仿真,结果表明该复合控制能够快速有效地抑制谐波。Because photovoltaic inverter and active filter have the same topology,the combination of photovoltaic inverter and active filter is conducive to improving the efficiency of photovoltaic grid-connected.Quasi proportional resonance(PR)control has strong dynamic response capability,but it can not achieve tracking without static error,while repetitive control can achieve tracking without static error,but there is delay problem and slow dynamic response.In this paper,PR control and repetitive control are combined to form a composite control to control the photovoltaic inverter,and realize the grid connection and filtering functions at the same time.The i p i q harmonic detection method based on instantaneous reactive power theory is emphatically analyzed and simulated by MATLAB/Simulink software.The final simulation results show that the compound control can effectively suppress harmonics.

关 键 词：光伏逆变器 有源滤波器 重复控制 PR控制 

分 类 号：TM743[电气工程—电力系统及自动化]