重复控制在三相不平衡负载中的应用  

Application of Repetitive Control in Three Phase Unbalanced Load

作　　者：叶宗彬[1] 陆超 代金贵 邓先明[1] 于东升[1] YE Zongbin;LU Chao;DAI Jingui;DENG Xianming;YU Dongsheng(School of Electrical Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu,China;State Grid Shandong Electric Power Company Taian,Tai’an 271000,Shandong,China)

机构地区：[1]中国矿业大学电气工程学院,江苏徐州221116 [2]国网山东省电力公司泰安供电公司,山东泰安271000

出　　处：《实验室研究与探索》2023年第9期126-131,167,共7页Research and Exploration In Laboratory

基　　金：江苏省高等教育教改研究课题(2017JSJG127,2021JSJG218);中国矿业大学教学研究项目(2022ZDKT03-104)。

摘　　要：逆变器带有不平衡负载时,输出电压中存在负序分量,在正序旋转坐标系下负序分量表现为二倍频交流分量,PI调节器无法完全抑制该负序分量。为此,提出采用重复控制器。基于重复控制器的基本原理以及结构,从稳定性、抗干扰性能、误差收敛速度、稳态误差4个方面对重复控制器的性能进行分析;给出重复控制器参数详细设计过程,并对所设计的重复控制器进行了稳定性校验。通过在Simulink仿真平台与实验室条件下搭建的小功率实验平台验证了算法的有效性与可行性。When the inverter has an unbalanced load,there is a negative sequence component in the output voltage.In the positive sequence rotation coordinate system,the negative sequence component appears is a doubled AC component,and the PI regulator cannot wholly suppress this negative order component.For this reason,this paper adopts a repetitive controller.The basic principle and structure of the repetitive controller are introduced,and the performance of the repeating controller is analyzed from four aspects,i.e.,stability,anti-interference performance,error convergence speed,and steady-state error.At the same time,the detailed design process of the repetitive controller parameters is given,and the stability verification of the designed repeated controller is carried out.Finally,the validity and feasibility of the algorithm are verified by the low-power experimental platform built on the Simulink simulation platform and laboratory conditions.

关 键 词：逆变器 不平衡负载 重复控制 

分 类 号：TM464[电气工程—电器]