Research on Selection and Protection Strategy of Voltage-Limiting Resistor in Traction Converters

Jilei GAO; Xueyang ZHENG; Yanlei LI; Bingruo XIE; Shuai GONG; Lin WANG

doi:10.13890/j.issn.1000-128x.2021.02.014

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Research on Selection and Protection Strategy of Voltage-Limiting Resistor in Traction Converters

High-power Devices | 更新时间：2021-12-09

- Research on Selection and Protection Strategy of Voltage-Limiting Resistor in Traction Converters
- Electric Drive for Locomotives Issue 2, Pages: 87-91(2021)
- 作者机构：
  
  1.中国铁道科学研究院集团有限公司　机车车辆研究所，北京　100081
  2.北京纵横机电科技有限公司，北京　100081
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2021.02.014
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Jilei GAO, Xueyang ZHENG, Yanlei LI, et al. Research on Selection and Protection Strategy of Voltage-Limiting Resistor in Traction Converters. [J]. Electric Drive for Locomotives (2):87-91(2021)
DOI：

Jilei GAO, Xueyang ZHENG, Yanlei LI, et al. Research on Selection and Protection Strategy of Voltage-Limiting Resistor in Traction Converters. [J]. Electric Drive for Locomotives (2):87-91(2021) DOI： 10.13890/j.issn.1000-128x.2021.02.014.

摘要

详细介绍了牵引变流器中间直流环节限压斩波回路的过压抑制基本原理，给出了限压电阻选取准则。针对限压电阻的过温保护，通过对牛顿冷却定律推导，得到了限压电阻温度实时估算公式，并形成了一种过温保护策略。通过试验得到限压电阻温度估算结果，证明了所采用的过压抑制方法的有效性。

Abstract

The basic principle of over voltage suppression for voltage-limiting chopper circuit of traction converters was introduced in details, and the selection criteria of voltage-limiting resistor was provided. Newton's law of cooling was derived to obtain the real-time estimation formula of the voltage-limiting resistor temperature, and the over voltage protection strategy of the resistor was proposed. The results of temperature estimation of the voltage-limiting resistor were given through experiments, and the effectiveness of the over voltage suppression method used was proved.

关键词

动车组限压电阻牵引变流器温度估算保护策略

Keywords

EMUvoltage-limiting resistorstraction converterstemperature estimationprotection strategy

references

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Tangshan Institute, Southwest Jiaotong University

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