Analysis and suppression of common-mode resonance in chopper circuit of high-frequency auxiliary converter

WANG Tao; ZHU Bingquan; YUAN Keliang; YANG Deyong; LU Qiaoxu; ZHANG Chen

doi:10.13890/j.issn.1000-128X.2024.04.004

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Analysis and suppression of common-mode resonance in chopper circuit of high-frequency auxiliary converter

Converting Basic Technology Column | 更新时间：2024-09-12

- Analysis and suppression of common-mode resonance in chopper circuit of high-frequency auxiliary converter
- Electric Drive for Locomotives Issue 4, Pages: 34-40(2024)
- 作者机构：
  
  中车株洲电力机车研究所有限公司，湖南株洲 412001
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2024.04.004
  CLC： U264.3⁺7
- Published：10 July 2024，
  
  Received：02 January 2024，
  
  Revised：28 May 2024，
- 稿件说明：
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王涛, 朱柄全, 袁科亮, 等. 高频辅助变流器斩波电路共模谐振分析及抑制方法研究[J]. 机车电传动, 2024(4): 34-40.

WANG Tao, ZHU Bingquan, YUAN Keliang, et al. Analysis and suppression of common-mode resonance in chopper circuit of high-frequency auxiliary converter[J]. Electric drive for locomotives,2024(4): 34-40.
王涛, 朱柄全, 袁科亮, 等. 高频辅助变流器斩波电路共模谐振分析及抑制方法研究[J]. 机车电传动, 2024(4): 34-40. DOI：10.13890/j.issn.1000-128X.2024.04.004.

WANG Tao, ZHU Bingquan, YUAN Keliang, et al. Analysis and suppression of common-mode resonance in chopper circuit of high-frequency auxiliary converter[J]. Electric drive for locomotives,2024(4): 34-40. DOI：10.13890/j.issn.1000-128X.2024.04.004.

摘要

文章针对高频辅助变流器共模谐振的分析与抑制方法展开研究，提出了一种高效的共模等效建模方法。首先将“多噪声源”的变流器系统等效成多个“单一噪声源”模型，显著降低了系统的复杂度，便于分析特定噪声源产生的谐振。其次分析了高频辅助变流器斩波电路共模电流的时频特征和干扰耦合路径的转移导纳特性，揭示了共模谐振的产生机理。最后提出了一种从源头抑制谐振的方法，并通过仿真与试验验证了抑制方法的有效性。

Abstract

This paper analyzes common-mode resonance in high-frequency auxiliary converters and explores a suppression approach by introducing an efficient common-mode equivalent modeling method. Firstly

the converter system with multiple noise sources was equivalently represented using several models with a single noise source. This significantly reduced the system complexity

facilitating the analysis of resonance generated by specific noise sources. Secondly

the generating mechanism of common-mode resonance was uncovered

by investigating the time-frequency characteristics of common-mode current and the transfer admittance characteristics of interference coupling paths within the chopper circuit of high-frequency auxiliary converters. Finally

a method for suppressing resonance at the sources was proposed

and its effectiveness was validated through simulations and experiments.

关键词

高频辅助变流器共模干扰干扰建模耦合路径谐振抑制

Keywords

high-frequency auxiliary convertercommon-mode noiseinterference modelingcoupling pathresonance suppression

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