Research on Crowbar Protection Circuit in Traction Converter

Yupeng LI; Jianhui FU; Yongjiang LIU; Ronghui FAN; Xionghui TANG; Zhenjun LIN

doi:10.13890/j.issn.1000-128x.2021.02.013

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Research on Crowbar Protection Circuit in Traction Converter

High-power Devices | 更新时间：2021-12-09

- Research on Crowbar Protection Circuit in Traction Converter
- Electric Drive for Locomotives Issue 2, Pages: 79-86(2021)
- 作者机构：
  
  1.株洲中车时代电气股份有限公司，湖南　株洲　412001
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2021.02.013
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Yupeng LI, Jianhui FU, Yongjiang LIU, et al. Research on Crowbar Protection Circuit in Traction Converter. [J]. Electric Drive for Locomotives (2):79-86(2021)
DOI：

Yupeng LI, Jianhui FU, Yongjiang LIU, et al. Research on Crowbar Protection Circuit in Traction Converter. [J]. Electric Drive for Locomotives (2):79-86(2021) DOI： 10.13890/j.issn.1000-128x.2021.02.013.

摘要

针对牵引变流器IGBT器件失效故障导致炸损等严重后果的现状，分析了几种常见的IGBT功率模块失效模式，介绍了撬棒保护电路和原理，从电路分析和能量密度仿真角度定性和定量对比了各种失效模式下有无撬棒保护电路的差别，对于防止由于单管短路进而导致桥臂直通、降低故障IGBT功率模块损伤范围、防止已短路失效IGBT器件炸损，通过试验验证了撬棒保护电路的有效性。

Abstract

In view of the current status of IGBT failures causing serious consequences in traction converter, several common IGBT power module failure modes were analyzed, crowbar protection circuit and principle were introduced, and the qualitative and quantitative comparisons of with/without crowbar protection circuit in various failure modes were carried out with circuit analysis and energy density simulation. Finally, the effectiveness of crowbar protection circuit in preventing the single-device short circuit then causing bridge-through faults, reducing module damage, and preventing device damage due to the single-device short circuit failure was verified by multiple tests.

关键词

牵引变流器电力机车IGBT单管短路桥臂直通撬棒仿真保护电路

Keywords

traction converterelectric locomotiveIGBTsingle-device short circuitbridge-throughcrowbarssimulationprotection circuit

references

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DING Rongjun, Huang Jirong. Modern converter technology and electric drive[M]. Beijing: Science Press, 2009.

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