Control Strategy for PV Inverter Under Unbalanced and Distorted Grid

OUYANG Sen; MA Wenjie; KE Qingpai

doi:10.14044/j.1674-1757.pcrpc.2018.05.028

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Control Strategy for PV Inverter Under Unbalanced and Distorted Grid

更新时间：2024-09-14

- Control Strategy for PV Inverter Under Unbalanced and Distorted Grid
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 39, Issue 5, Pages: 162-166(2018)
- 作者机构：
  
  华南理工大学电力学院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2018.05.028
  CLC： TM464;TM615
- Published：2018，
- 稿件说明：
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[1]欧阳森,马文杰,柯清派.不平衡及畸变电网下光伏逆变器控制策略[J].电力电容器与无功补偿,2018,39(05):162-166.

OUYANG SEN, MA WENJIE, KE QINGPAI. Control Strategy for PV Inverter Under Unbalanced and Distorted Grid. [J]. Power capacitor & reactive power compensation, 2018, 39(5): 162-166.
[1]欧阳森,马文杰,柯清派.不平衡及畸变电网下光伏逆变器控制策略[J].电力电容器与无功补偿,2018,39(05):162-166. DOI： 10.14044/j.1674-1757.pcrpc.2018.05.028.

OUYANG SEN, MA WENJIE, KE QINGPAI. Control Strategy for PV Inverter Under Unbalanced and Distorted Grid. [J]. Power capacitor & reactive power compensation, 2018, 39(5): 162-166. DOI： 10.14044/j.1674-1757.pcrpc.2018.05.028.

摘要

本文针对不平衡及畸变电网下光伏逆变器的控制问题

首先从获取电网基波幅值、相位信息出发

设计了基于二阶广义积分器（second order generalized integrator

SOGI）的锁相功能模块

并通过实验证明其在不平衡或畸变电网下能快速、准确地获得电压正序分量的幅值和相位。然后

为实现畸变及不平衡电网下并网电流的高品质控制

设计了PI并联重复控制器的复合控制系统。最后

利用PSCAD搭建出光伏逆变器并网系统仿真模型

仿真结果证明了本文所设计方案的正确性。

Abstract

As for the control issue of PV inverter under unbalanced and distorted grid

the phase lockedfunction module based on the second order generalized integrator（SOGI for short）is designed firstly in ac-cordance with obtaining fundamental amplitude and phase information of the grid. Its ability in obtainingquickly and correctly the amplitude and phase of voltage positive sequence component at unbalanced anddistorted grid is verified through experiment. Then

the hybrid control system for PI parallel repetitive con-troller is designed for high quality control of grid current in distorted and unbalanced grid. Finally

the sim-ulation model of grid-connected system for photovoltaic inverter is set up by the use of PSCAD and the cor-rectness of the designed scheme in this paper is verified by the simulation result.

关键词

不平衡及畸变电网锁相环光伏逆变器重复控制器PSCAD

Keywords

unbalanced and distorted gridPLLPV inverterrepetitive controllerPSCAD

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