Study on the Influence of Ripple Current on Temperature Rise of DC Support Capacitor

SUN Xiaowu

doi:10.14044/j.1674-1757.pcrpc.2020.04.014

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Study on the Influence of Ripple Current on Temperature Rise of DC Support Capacitor

更新时间：2024-09-14

- Study on the Influence of Ripple Current on Temperature Rise of DC Support Capacitor
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 4, Pages: 76-80(2020)
- 作者机构：
  
  无锡市电力滤波有限公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.04.014
  CLC： TM53
- Published：2020，
- 稿件说明：
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[1]孙晓武.直流支撑电容器的纹波电流影响其温升的研究[J].电力电容器与无功补偿,2020,41(04):76-80+97.

SUN XIAOWU. Study on the Influence of Ripple Current on Temperature Rise of DC Support Capacitor. [J]. Power capacitor & reactive power compensation, 2020, 41(4): 76-80.
[1]孙晓武.直流支撑电容器的纹波电流影响其温升的研究[J].电力电容器与无功补偿,2020,41(04):76-80+97. DOI： 10.14044/j.1674-1757.pcrpc.2020.04.014.

SUN XIAOWU. Study on the Influence of Ripple Current on Temperature Rise of DC Support Capacitor. [J]. Power capacitor & reactive power compensation, 2020, 41(4): 76-80. DOI： 10.14044/j.1674-1757.pcrpc.2020.04.014.

摘要

直流支撑电容器是变流器不可缺少的重要部分

直流支撑电容器的运行温度会影响使用寿命。为此

需要研究纹波电流对其温升的影响。首先

以直流支撑电容器为研究对象

研究了直流支撑电容器的发热功率、纹波电流对温升的影响。进而

通过对试品基于单一频率电流的温升试验和发热功率计算

以验证纹波电流对温升的影响。结果表明:纹波电流的数值和频率影响直流支撑电容器的温升;直流支撑电容器的温升与其纹波电流方均根值的平方成正比关系

与纹波电流的频率成反比关系;直流支撑电容器的温升还与损耗角正切成正比关系

与其散热面积、外壳散热系数成反比关系。

Abstract

DC support capacitor is an indispensable and important part of converter and its operating temperature will affect its service life.Therefore

it is necessary to study the influence of ripple current on its temperature rise.Firstly

the influence of heating power and ripple current of DC link capacitor on temperature rise is studied by taking DC support capacitor as the research object.Furthermore

the influence of ripple current on temperature rise is verified by temperature rise test and heating power calculation based on single frequency current.It is shown by the result show that the value and frequency of ripple current affect the temperature rise of DC support capacitor.The temperature rise of DC support capacitor is directly proportional to the square of the average root of ripple current and inversely proportional to the frequency of ripple current.The temperature rise of DC support capacitor is also directly proportional to the loss angle and inversely proportional to its heat dissipation area and shell heat dissipation coefficient.

关键词

直流支撑电容器纹波电流频率温升发热功率

Keywords

DC support capacitorripple currentfrequencytemperature riseheating power

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