基于重复控制的并联型有源滤波器电流控制研究  

Research on Current Control of Shunt Active Power Filters Based on Repetitive Control

作　　者：张诣 方勇 ZHANG Yi;FANG Yong(Kunming Power Supply Bureau of Yunnan Power Grid Co.Ltd.,Kunming 650011,China)

机构地区：[1]云南电网有限责任公司昆明供电局,昆明650011

出　　处：《浙江电力》2021年第6期42-48,共7页Zhejiang Electric Power

基　　金：云南电网公司职工创新项目基金(0501002020030304BX00069)。

摘　　要：单相并联型有源滤波器电流控制采用双环控制结构,内环PI控制校正LCL并网滤波器频率特性,简化外环重复控制器设计,提高动态响应速度。外环采用嵌入式重复控制保证控制系统稳态精度,同时引入电网电压前馈抑制电压扰动影响。详细分析了电压前馈控制性能,双环控制系统的稳定性和鲁棒性,分析和实验结果表明重复加PI双环控制系统响应速度快,稳态精度高,抗扰动能力强,并且具有较好的鲁棒性。Current control of single-phase shunt active power filter(SAPF)adopts a dual-loop control structure.The inner loop PI controller modifies the frequency response of the LCL filter,simplifies the design of the outer loop repetitive controller,and achieves fast dynamic response.A plug-in repetitive controller is adopted as the outer loop controller to ensure steady-state precision of the control system.Grid voltage feedforward is introduced to attenuate the impact of voltage disturbance.The paper analyzes the performance of feedforward control,and the stability and robustness of the dual-loop control system.All the analysis and experimental results show that the repetitive control plus dual-loop control system is characterized by its quick response,high steady-state precision,preferable anti-interference capability and robustness.

关 键 词：并联型有源滤波器 LCL滤波器 重复控制 电网电压前馈控制 双环控制 

分 类 号：TM712[电气工程—电力系统及自动化]