Study on Control Strategy for Single-phase Power Phase-locked Loop with Generalized Integrator

WANG Chong1; YU Feng1; CHEN Rong2

doi:10.13296/j.1001-1609.hva.2011.04.001

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Study on Control Strategy for Single-phase Power Phase-locked Loop with Generalized Integrator

更新时间：2025-04-26

- Study on Control Strategy for Single-phase Power Phase-locked Loop with Generalized Integrator
- High VoltageApparatus Vol. 47, Issue 4, Pages: 13-16+22(2011)
- 作者机构：
  
  1. 江苏大学电气信息工程学院
  2. 盐城工学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2011.04.001
  CLC： TM761
- Published：2011
- 稿件说明：
移动端阅览
[1]王冲,於锋,陈荣.基于广义积分器的电力单相锁相环研究[J].高压电器,2011,47(04):13-16+22.

WANG Chong1, YU Feng1, CHEN Rong2. Study on Control Strategy for Single-phase Power Phase-locked Loop with Generalized Integrator[J]. High voltageapparatus, 2011, 47(4): 13-16+22.
[1]王冲,於锋,陈荣.基于广义积分器的电力单相锁相环研究[J].高压电器,2011,47(04):13-16+22. DOI： 10.13296/j.1001-1609.hva.2011.04.001.

WANG Chong1, YU Feng1, CHEN Rong2. Study on Control Strategy for Single-phase Power Phase-locked Loop with Generalized Integrator[J]. High voltageapparatus, 2011, 47(4): 13-16+22. DOI： 10.13296/j.1001-1609.hva.2011.04.001.

摘要

针对目前软件锁相环技术存在锁相误差及滤波延时的不足

笔者基于瞬时无功理论的单相锁相环技术

提出一种通过二阶广义积分器来构造正交信号的方法。并对输入电压存在直流分量的情况下

分析了正交电压分量输出的偏移情况

设计一个前馈低通滤波器后

性能有了明显的改善。最后通过在PSCAD/EMTDC中单相可控并联无功补偿（TCPC）系统仿真的基础上验证了该方案可以有效提高锁相精度并对电压畸变有较强的抑制作用

因此适用于实际的单相系统。

Abstract

There are big phase-locked errors in current techniques of software phase-locked loop and the time-delayed in the filter.A new design method of orthogonal signal generation with second order Generalized Integrator was proposed based on analysis of instantaneous reactive power theory used in single-phase phased-locked loop.In case of DC component exist in the input voltage signal

the orthogonal voltage signal was analyzed

after the design process of a feed forward low-pass filter

the performance have been improved significantly.Finally

single-phase controllable parallel reactive power compensation system was built in PSCAD/EMTDC.From the simulation results

it is demonstrated that proposed method can improve the accuracy of phase-locked effectively and reject voltage distortion strongly

so it has a practical value for single-phase system.

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