电气工程学报 ›› 2017, Vol. 12 ›› Issue (10): 9-18.doi: 10.11985/2017.10.002

• 理论研究 • 上一篇    下一篇

地铁车辆牵引逆变器IGBT模块的结温与疲劳寿命计算

丁杰1,2,张平1   

  1. 1. 湘潭大学土木工程与力学学院 湘潭 411105
    2. 株洲中车时代电气股份有限公司技术中心 株洲 412001
  • 收稿日期:2016-07-31 出版日期:2017-10-25 发布日期:2017-10-25
  • 作者简介:丁 杰 男 1979年生,博士研究生,高级工程师,研究方向为一般力学与力学基础、变流器结构仿真与热仿真。|张 平 男 1955年生,教授,博士生导师,研究方向为固体力学与流变力学。

Junction Temperature and Fatigue Life Calculation of IGBT Module for Metro Vehicle Traction Inverter

Ding Jie1,2,Zhang Ping1   

  1. 1. Xiangtan University Xiangtan 411105 China
    2. Zhuzhou CRRC Times Electric Co.,Ltd. Zhuzhou 412001 China
  • Received:2016-07-31 Online:2017-10-25 Published:2017-10-25

摘要:

地铁线路牵引逆变器的IGBT模块结温波动非常复杂,容易引起IGBT模块发生疲劳失效。以北京地铁7号线为研究对象,根据列车牵引的最快速策略和额定载荷工况可以得到牵引逆变器的电气参数,再利用数据手册和IPOSIM软件算法得到IGBT模块的损耗。由数值模拟方法得到热管散热器随车辆速度变化的热阻曲线,通过热阻抗法计算出IGBT结温、IGBT壳温、二极管结温、二极管壳温和散热器温升曲线。利用LESIT疲劳寿命模型、雨流计数方法和线性累积损伤理论计算出IGBT芯片和二极管芯片的疲劳寿命。最后探讨了最经济策略、超载工况、环境温度、接触热阻和疲劳寿命模型参数等因素对芯片平均温度和疲劳损伤的影响。

关键词: 地铁车辆, 牵引逆变器, IGBT模块, 牵引计算, 损耗, 温升, 疲劳寿命

Abstract:

During the operation of rail vehicle, there are many factors that complicate the fluctuation of IGBT module’s junction temperature for traction invertor, and affect the fatigue life of IGBT module. Taking Beijing Metro Line 7 as the research object, the electrical parameters are obtained based on the most rapid strategy and rated load condition, and the losses of IGBT module are calculated based on the datasheet and calculation method of IPOSIM software. The thermal resistance curve of heat pipe radiator with the vehicle velocity is obtained by numerical simulation, the temperature curves of IGBT junction, IGBT case, diode junction, diode case and heat sink are calculated by using thermal impedance method. The fatigue life of IGBT chip and diode chip are obtained according to LESIT fatigue life model, rain flow counting method and linear cumulative damage law. Finally, the influence of the economic strategy, overload condition, circumstance temperature, contact resistance and life model parameter on the chip average temperature and fatigue damage are discussed.

Key words: Metro vehicle, traction inverter, IGBT module, traction calculation, loss, temperature rise, fatigue life

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