Study on New Control Strategy for DFIG Grid-side Converter Based on LCL Active Damping

TAN Lichao; XIAO Hongjie

doi:10.14044/j.1674-1757.pcrpc.2016.06.023

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Study on New Control Strategy for DFIG Grid-side Converter Based on LCL Active Damping

更新时间：2024-09-14

- Study on New Control Strategy for DFIG Grid-side Converter Based on LCL Active Damping
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 37, Issue 6, Pages: 133-139(2016)
- 作者机构：
  
  上海电力学院电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2016.06.023
  CLC： TM46
- Published：2016，
- 稿件说明：
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[1]谭立超,肖鸿杰.基于LCL有源阻尼的DFIG网侧变流器的新型控制策略研究[J].电力电容器与无功补偿,2016,37(06):133-139.

TAN LICHAO, XIAO HONGJIE. Study on New Control Strategy for DFIG Grid-side Converter Based on LCL Active Damping. [J]. Power capacitor & reactive power compensation, 2016, 37(6): 133-139.
[1]谭立超,肖鸿杰.基于LCL有源阻尼的DFIG网侧变流器的新型控制策略研究[J].电力电容器与无功补偿,2016,37(06):133-139. DOI： 10.14044/j.1674-1757.pcrpc.2016.06.023.

TAN LICHAO, XIAO HONGJIE. Study on New Control Strategy for DFIG Grid-side Converter Based on LCL Active Damping. [J]. Power capacitor & reactive power compensation, 2016, 37(6): 133-139. DOI： 10.14044/j.1674-1757.pcrpc.2016.06.023.

摘要

在DFIG并网发电过程中

变流器非线性开关会增加入网电流高频谐波含量

一般的L型滤波很难实现理想的滤波效果。近几年有学者提出一种LCL新型滤波器

相比于L型的滤波器

LCL滤波器体积更小、损耗更小、滤除谐波的效果也更好。但是

LCL型滤波器是一个高阶的系统

控制设计麻烦并伴随着谐振的产生。针对上述缺点本文提出了一种基于LCL有源阻尼滤波器的准比例谐振（proportional resonance

PR）控制策略和电容电流反馈控制方法来简化控制系统和抑制系统的谐振

在Matlab/Simulink软件中建立仿真模型

对上述控制策略进行了仿真验证

仿真实验波形证明了上述控制方法的正确性。

Abstract

During power generation period of DFIG at grid connection

the high frequency harmonic contents of the grid current will be increased by the non-linear switch of converter and ideal filtering result is not easy to be achieved by general type L filter. In recent years

a kind of new type LCL filter is proposed by some scholars which

compared to type L filter

has smaller volume

smaller loss and better result of eliminating harmonics. However

type LCL filter is a higher order system with complicated control design and resonance generation. As for above shortcoming

in this paper a kind of proportional res-onance control strategy and capacitive current feed control method based on LCL active damping filter is proposed so simplify the control system and suppress harmonics of the control system. The simula-tion model is set up in MATALAB/Simulink software is set up and above control strategy is simulated and verified. And the correctness of above control method is proved by the simulation and experimental waveform.

关键词

风电并网网侧LCL滤波器有源阻尼准PR控制电容电流反馈

Keywords

wind power gridgrid side LCL filteractive dampingquasi PR controlcapacitor current feedback

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