摘要
针对在有源电力滤波器(APF)中应用传统滑模控制存在的抖振和控制精度问题,本文提出一种基于超螺旋二阶滑模控制的电流跟踪控制方法.通过选取合适的滑模面,利用超螺旋二阶滑模控制思想,在保留传统滑模控制优点的基础上,将传统滑模控制中离散化的高频抖振输出信号转移到高阶,使控制量在时间上连续,从而抑制抖振.为验证所提控制策略的优越性,在Matlab/Simulink中搭建单相APF控制系统模型进行仿真实验.仿真结果表明,该控制方法在保持传统滑模控制优点的同时能够有效地抑制抖振,并提升了APF的动静态品质.
Aimed at the problems of chattering and control precision in the applications of the traditional sliding mode control to an active power filter(APF),a current tracking control method based on super-twisting second-order sliding mode control is proposed in this paper.By selecting a suitable sliding mode surface and using the super-twisting secondorder sliding mode control,the discretized high-frequency chattering output signal from the traditional sliding mode con⁃trol is transferred to a higher-order one on the basis of maintaining the advantages of the traditional sliding mode control.As a result,the control quantity is continuous in time,thus effectively suppressing chattering.To verify the superiority of the proposed control strategy,a single-phase APF control system model is built in Matlab/Simulink to carry out simu⁃lation experiments.Simulation results show that this control method can effectively suppress chattering while maintain⁃ing the advantages of the traditional sliding mode control.In addition,it effectively improves the dynamic and static quality of the APF.
作者
李志军
王丽娟
张奕楠
贾学岩
张雅雯
LI Zhijun;WANG Lijuan;ZHANG Yinan;JIA Xueyan;ZHANG Yawen(School of Artificial Intelligence,Hebei University of Technology,Tianjin 300130,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2020年第6期36-42,共7页
Proceedings of the CSU-EPSA
基金
河北省科技支撑计划项目(15212105D)。
关键词
有源电力滤波器
二阶滑模
超螺旋算法
抖振
控制精度
active power filter(APF)
second-order sliding mode
super-twisting algorithm
chattering
control accuracy
作者简介
李志军(1964—),男,博士,正高级工程师,博士生导师,研究方向为电力电子及应用技术、新能源及应用技术、电力系统稳定与控制。Email:zhijun_li@263.net;王丽娟(1991—),女,硕士研究生,研究方向为电力电子及应用技术。Email:991709783@qq.com;张奕楠(1993—),男,硕士研究生,研究方向为新能源及应用技术。Email:1019884410@qq.com。
