基于改进型LADRC的SAPF双闭环控制策略研究  

Research on SAPF Double Closed-loop Control Strategy Based on Improved LADRC

作　　者：周雪松 崔阳阳[1,2] 马幼捷 孙小桐 陈昱龙[1,2] 葛建鹏 ZHOU Xuesong;CUI Yangyang;MAYoujie;SUN Xiaotong;CHEN Yulong;GE Jianpeng(College of Electrical and Electronic Engineering,Tianjin University of Technology,Tianjin 300384,China;Tianjin Key Laboratory for Control Theory and Application in Complicated Systems,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]天津理工大学电气电子工程学院,天津300384 [2]天津理工大学天津市复杂系统控制理论及应用重点实验室,天津300384

出　　处：《电气传动》2021年第15期53-60,共8页Electric Drive

基　　金：国家自然科学基金(51877152);天津市自然科学基金(18JCZDJC97300)。

摘　　要：为提高并联型有源电力滤波器(SAPF)的动态跟踪速度和抗扰动能力,提出一种基于误差控制原理的改进型线性自抗扰控制器(LADRC)。该改进型LADRC将各状态变量与其观测值之间的误差作为线性扩张状态观测器(LESO)中各状态变量的调节依据。利用频域分析法对改进型LADRC进行了抗扰特性分析,且在系统稳定的前提下,将该控制器应用于SAPF的电流内环和电压外环双闭环控制。最后,通过仿真对比分析改进型LADRC和传统LADRC控制下网侧电流和PWM变流器直流侧电压波形,结果验证了该改进型LADRC的正确性和可行性。In order to improve the dynamic tracking speed and anti-disturbance capability of the shunt active power filter(SAPF),an improved linear active disturbance rejection controller(LADRC)based on the error control principle was proposed.The improved LADRC took the error between each state variable and its observed value as the basis for adjusting each state variable in the linear expanded state observer(LESO).The frequency domain analysis method was used to analyze the anti-jamming characteristics of the improved LADRC.Under the premise of stable system,the controller was applied to the SAPF's current inner loop and voltage outer loop dual closed loop control.Finally,through the simulation,the grid-side current and the DC-side voltage waveforms of the PWM converter under improved LADRC and traditional LADRC control were comparative analyzed.The results verify the correctness and feasibility of the improved LADRC.

关 键 词：并联型有源电力滤波器 线性自抗扰控制器 误差控制原理 双闭环控制 频域分析 

分 类 号：TN713[电子电信—电路与系统]