电器与能效管理技术 ›› 2020, Vol. 593 ›› Issue (8): 84-87.doi: 10.16628/j.cnki.2095-8188.2020.08.016

• 电能质量 • 上一篇    下一篇

有源电力滤波器锁相环改进设计

周万鹏, 纪君利, 郭彦宏   

  1. 国网嘉兴供电公司,浙江 嘉兴 314000
  • 收稿日期:2020-02-26 出版日期:2020-08-30 发布日期:2020-09-10
  • 作者简介:周万鹏(1988—),男,工程师,主要从事电力调度及并网设备并网研究。|纪君利(1986—),男,工程师,主要从事电力系统及其自动化、负荷预测研究。|郭彦宏(1986—),男,工程师,主要从事电力系统配网调度管理研究。

Improved Design of Phase-Locked Loop of Active Power Filter

ZHOU Wanpeng, JI Junli, GUO Yanhong   

  1. State Grid Jiaxing Electric Power Supply Company,Jiaxing 314000,China
  • Received:2020-02-26 Online:2020-08-30 Published:2020-09-10

摘要:

针对有源滤波器在三相电压畸变时同步信号不准确、控制效果差的缺点,提出了基于自适应滤波器的软件锁相方法。改进的自适应滤波器动态响应快、稳态精度高,能够有效滤除含有谐波分量时uq上的交流分量,去除无效干扰量,从而获得更为准确的同步锁相信号。MATLAB仿真和实验表明所提算法用于有源滤波器锁相信号获得的有效性,并能改善有源滤波器的补偿特性。

关键词: 锁相环, 自适应滤波器, 有源滤波器, 同步信号

Abstract:

The synchronization signal will be not accurate when the three-phase voltage is unbalanced or distorted,which results in the bad control effect for active power filter.Therefore this paper proposed a new software phase-locked loop based on adaptive filter.The improved adaptive filter has the advantages of fast dynamic response and high steady-state accuracy.It can remove the AC component out of the uq when the three-phase voltage distorted.Consequently,it eliminates the judder of frequency and phase.Then the new method can provide the accurate synchronization signal.The simulation and experiment results show that the algorithm is effective to get the synchronous signal for active power filter.It can improve the compensation performance of active power filter.

Key words: phase-locked loop, adaptive filter, active power filter, synchronization signal

中图分类号: