Study on the Noise Characteristics Test of DC Filter Capacitor

LI Jinyu; Cui Hantao; ZHU Lingyu; JI Shengchang

doi:10.14044/j.1674-1757.pcrpc.2017.04.002

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Study on the Noise Characteristics Test of DC Filter Capacitor

更新时间：2024-09-14

- Study on the Noise Characteristics Test of DC Filter Capacitor
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 38, Issue 4, Pages: 11-16(2017)
- 作者机构：
  
  西安交通大学电力设备电气绝缘国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2017.04.002
  CLC： TM53
- Published：2017，
- 稿件说明：
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[1]李金宇,崔瀚焘,祝令瑜,汲胜昌.直流滤波电容器噪声特性试验研究[J].电力电容器与无功补偿,2017,38(04):11-16.

LI JINYU, CUI HANTAO, ZHU LINGYU, et al. Study on the Noise Characteristics Test of DC Filter Capacitor. [J]. Power capacitor & reactive power compensation, 2017, 38(4): 11-16.
[1]李金宇,崔瀚焘,祝令瑜,汲胜昌.直流滤波电容器噪声特性试验研究[J].电力电容器与无功补偿,2017,38(04):11-16. DOI： 10.14044/j.1674-1757.pcrpc.2017.04.002.

LI JINYU, CUI HANTAO, ZHU LINGYU, et al. Study on the Noise Characteristics Test of DC Filter Capacitor. [J]. Power capacitor & reactive power compensation, 2017, 38(4): 11-16. DOI： 10.14044/j.1674-1757.pcrpc.2017.04.002.

摘要

直流滤波电容器在运行中会受到谐波电压和电流作用

也存在着噪声问题。目前国内对交流滤波电容器噪声进行了相关研究

而在直流滤波电容器的噪声研究并不充分。交流滤波电容器的噪声频率是由各个频率交流电压的差频、和频与倍频项组成的。而直流滤波电容器中

除上述3项外

还存在谐波电压本身频率的振动与噪声。本文通过直流滤波电容器噪声试验

分析了不同加载条件对电容器噪声的影响。试验结果表明

直流电压主要影响噪声的大小

而交流谐波电压则决定了噪声的频率

并且直流电容器噪声的声功率级与所加载直流电压的对数呈正比关系。

Abstract

DC filter capacitor is affected by the harmonic voltage and current in the operation and the noise problem is also existed. At present

related study on the noise of AC filter capacitor in China is made and

however

the study on that of DC filter capacitor is not sufficient. The noise frequency of AC filter capacitor is composed of the difference frequency

sum frequency and frequency doubling at AC voltage of various frequencies But in the DC filter capacitor

in addition to above three items

the vibration and noise of the frequency of the harmonic voltage itself is existed. In this paper

the influence of different loading condition the capacitor noise is analyzed through the noise analysis of DC filter capacitor. It is shown by the test result that the noise magnitude of mainly influenced by the DC voltage and the noise frequency is determined by the AC harmonic voltage and the sound power level of DC filter capacitor is proportional with logarithm of DC voltage.

关键词

直流滤波电容器可听噪声噪声特性

Keywords

DC filter capacitoraudible noisecharacteristic of noise

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