基于重复控制的有源电力滤波器6k±1次谐波补偿

ZHENG Yuanhui

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基于重复控制的有源电力滤波器6k±1次谐波补偿

更新时间：2025-08-13

- 基于重复控制的有源电力滤波器6k±1次谐波补偿
- Automation of Electric Power Systems Vol. 40, Issue 16, Pages: 125-131(2016)
- 作者机构：
  
  华南理工大学电力学院,广东省,广州市,510640
- 作者简介：
- 基金信息：
- DOI：
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- Published：2016
- 稿件说明：
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ZHENG Yuanhui. [J]. Automation of electric power systems, 2016, 40(16): 125-131.
DOI：

ZHENG Yuanhui. [J]. Automation of electric power systems, 2016, 40(16): 125-131. DOI：

摘要

采用重复控制(RC)有利于提高有源电力滤波器(APF)的补偿性能。针对三相整流电路产生的6k+1次谐波为正序量

6k-1次谐波为负序量的特点

提出了dq旋转坐标系下的选择性RC内核

用于补偿6k±1次谐波。为消除该RC内核存在的N/6拍延时不为整数的影响

引入基于Thiran近似法的无限脉冲响应(IIR)滤波器来逼近所需的分数延时特性

提高系统补偿性能。采用重复控制器串联比例—积分(PI)控制器的复合控制结构

并对该复合控制系统进行了理论推导及稳定性分析

进而给出了控制器的详细设计方法。最后通过仿真验证了所提方法的有效性和优越性。

Abstract

The compensation performance of active power filter(APF)is improved by using repetitive control(RC). For the harmonic characteristic of a three-phase rectifier

as 6k+1 order harmonics are positive sequence component

while 6k-1 order harmonics are negative sequence component

a selective repetitive controller is proposed. This controller is designed to compensate for the 6k±1 order harmonics in the dq reference frame. In addition

the delay time of the proposed repetitive controller may not be an integer and will reduce the compensation performance. In order to eliminate the N/6 beat delay effect

an IIR filter based on Thiran approximation is introduced to approximate the desired fractional delay. In this paper

the composite control structure of PI controller in series with the proposed repetitive controller is used

and the theoretical derivation and stability analysis of the composite control system are carried out

till the detailed design method of the controller is provided. Finally

the effectiveness and superiority of the proposed method are verified by simulation. This work is supported by National High Technology Research and Development Program of China(863 Program)(No.2014AA052001).

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