Research on Control Technology of Active Power Filter Under Grid Distortion Condition

ZHANG Guihong

doi:10.14044/j.1674-1757.pcrpc.2018.06.008

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Research on Control Technology of Active Power Filter Under Grid Distortion Condition

更新时间：2024-09-14

- Research on Control Technology of Active Power Filter Under Grid Distortion Condition
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 39, Issue 6, Pages: 38-42(2018)
- 作者机构：
  
  武汉交通职业学院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2018.06.008
  CLC： TM761
- Published：2018，
- 稿件说明：
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[1]张桂红.电网畸变条件下有源电力滤波器控制技术研究[J].电力电容器与无功补偿,2018,39(06):38-42+47.

ZHANG GUIHONG. Research on Control Technology of Active Power Filter Under Grid Distortion Condition. [J]. Power capacitor & reactive power compensation, 2018, 39(6): 38-42.
[1]张桂红.电网畸变条件下有源电力滤波器控制技术研究[J].电力电容器与无功补偿,2018,39(06):38-42+47. DOI： 10.14044/j.1674-1757.pcrpc.2018.06.008.

ZHANG GUIHONG. Research on Control Technology of Active Power Filter Under Grid Distortion Condition. [J]. Power capacitor & reactive power compensation, 2018, 39(6): 38-42. DOI： 10.14044/j.1674-1757.pcrpc.2018.06.008.

摘要

基于电网畸变条件下传统控制方案造成有源电力滤波器谐波补偿效果不佳的问题

提出了一种改进的控制方案

该方案主要由改进同步锁相环（SRF-PLL）、改进谐波检测方法和自适应谐振电流控制器组成。改进的同步锁相环（SRF-PLL）利用滑动平均滤波器准确提取畸变电网电压基波正序分量

实现了SRF-PLL无静差、高精度的跟踪电网相位;改进的检测谐波方法采用滑动平均滤波器代替低通滤波器进行直流量提取

克服了传统检测法因低通滤波器导致实时动态性不强的缺陷;采用PI+VPI（矢量比例积分）电流控制方案

实现了有源电力滤波器在电网畸变条件下优异的电流控制性能

建立了一个5kVA三相有源电力滤波器实验平台

验证了本文提出控制策略的优越性。

Abstract

In view of weak harmonic compensation result of active power filter due to traditional control proposal under grid distortion

a kind of improved proposal is proposed

which consists of improved synchronous phase-locked loop（SRF-PLL）

improved harmonic detection method and adaptive resonant currentcontroller. The improved synchronous phase-locked loop（SRF-PLL）uses the moving average filter to ex-tract accurately the positive sequence component of the fundamental wave of distortion grid voltage toachieve tracking grid phase of SRF-PLL with no static difference and high accuracy. The improved harmon-ic detection method adopts moving average filter instead of low pass filter for DC extraction

which overcomes such defects of traditional detection method as weak real time dynamic due to low pass filter. The PI+VPI（vector proportional integral）current control scheme is used to achieve excellent current control per-formance of the active power filter under the condition of grid distortion. One 5kVA three-phase active power filter experimental platform is set up to verify the superiority of the proposed control strategy.

关键词

有源电力滤波器滑动平均滤波器（MAF）同步锁相环谐波检测谐振控制

Keywords

active power filter（APF）moving average filter（MAF）SRF-PLLharmonic detectionresonance control

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