Research on Generation and Suppression of Third Harmonic Current in Single Phase SVG

SUN-Hai

doi:10.14044/j.1674-1757.pcrpc.2011.05.001

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Research on Generation and Suppression of Third Harmonic Current in Single Phase SVG

更新时间：2024-09-14

- Research on Generation and Suppression of Third Harmonic Current in Single Phase SVG
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 32, Issue 5, Pages: 1-5(2011)
- 作者机构：
  
  华北电力大学电气与电子工程学院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2011.05.001
  CLC： TM761
- Published：2011，
- 稿件说明：
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[1]孙海.单相SVG三次谐波电流产生及抑制研究[J].电力电容器与无功补偿,2011,32(05):1-5.

SUN-HAI. Research on Generation and Suppression of Third Harmonic Current in Single Phase SVG. [J]. Power capacitor & reactive power compensation, 2011, 32(5): 1-5.
[1]孙海.单相SVG三次谐波电流产生及抑制研究[J].电力电容器与无功补偿,2011,32(05):1-5. DOI： 10.14044/j.1674-1757.pcrpc.2011.05.001.

SUN-HAI. Research on Generation and Suppression of Third Harmonic Current in Single Phase SVG. [J]. Power capacitor & reactive power compensation, 2011, 32(5): 1-5. DOI： 10.14044/j.1674-1757.pcrpc.2011.05.001.

摘要

单相SVG运行时

其直流侧电压中存在二次谐波

二次谐波电压经过调制后会产生三次谐波电压

从而使SVG输出电流中含有三次谐波

三次谐波电流会对电网造成污染

增大逆变器的容量。文章在分析单相SVG输出电流中三次谐波电流产生原因的基础上

提出在电压控制环中加入带阻滤波器来抑制三次谐波电流的措施

建立了仿真模型

并对仿真结果进行比较

分析了带阻滤波器对直流侧电压控制的影响

表明方案对输出的三次谐波电流有较强的抑制作用。

Abstract

The second harmonic voltage is existed in the voltage of DC side in case of operation of single phase SVG

the second harmonic voltage can generate the third harmonic voltage after modulation

thus keeping the output current of SVG contain the third harmonic

the third harmonic current will cause the pollution to the power grid and increase the capacity of the inverter.In this paper the measures of adding band-rejection filter in the voltage controlling loops to suppress the third harmonic current are proposed on the basis of analyzing the generating cause in the single phase SVG output current

simulation model is established

the simulation results are compared

the influence of band rejection filter on voltage control of DC side is analyzed.It is shown that the scheme has stronger suppression function to the output third harmonic current.

关键词

单相SVG带阻滤波器三次谐波电流静止无功发生器

Keywords

single phase SVGband-rejection filterthird harmonic currentstatic var generator

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