Life Prediction of Power Devices of Train Traction Inverter Based on SVPWM Modulation

Junhan YE; Ping YANG; Rongbin ZHOU; Xingjiang SHEN; Jun SHEN; Maosen TANG

doi:10.13890/j.issn.1000-128x.2021.05.028

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Life Prediction of Power Devices of Train Traction Inverter Based on SVPWM Modulation

Reliability and Failure Analysis | 更新时间：2021-12-13

- Life Prediction of Power Devices of Train Traction Inverter Based on SVPWM Modulation
- Electric Drive for Locomotives Issue 5, Pages: 175-182(2021)
- 作者机构：
  
  1.西南交通大学　电气工程学院，四川　成都　610031
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2021.05.028
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Junhan YE, Ping YANG, Rongbin ZHOU, et al. Life Prediction of Power Devices of Train Traction Inverter Based on SVPWM Modulation. [J]. Electric Drive for Locomotives (5):175-182(2021)
DOI：

Junhan YE, Ping YANG, Rongbin ZHOU, et al. Life Prediction of Power Devices of Train Traction Inverter Based on SVPWM Modulation. [J]. Electric Drive for Locomotives (5):175-182(2021) DOI： 10.13890/j.issn.1000-128x.2021.05.028.

摘要

空间矢量脉宽调制(space vector pulse width modulation，SVPWM)可分为五段式SVPWM和七段式SVPWM。为提高牵引逆变器的可靠性，对其关键部件IGBT模块进行基于任务剖面的结温分析和寿命预测，研究2 种不同SVPWM调制策略对器件寿命的影响。首先，建立高速列车牵引逆变系统的电热模型，分析动车组运行速度和不同SVPWM调制策略对器件损耗的影响；其次，以某CRH3型动车组全天的模拟工况为例，计算功率器件的结温，采用雨流计数法提取功率器件热循环的结温信息，包括结温波动和结温最大值；最后，采用Norris-Landzberg寿命模型和Miner线性累积损伤模型计算功率器件的损伤，预测对比2种SVPWM调制策略下的功率器件寿命。仿真结果表明，二极管的结温波动和结温循环最大值比IGBT的结温波动和结温循环最大值更大。采用七段式SVPWM调制策略能延长IGBT模块17.8%的寿命，节约动车组维护成本。

Abstract

Space vector pulse width modulation (SVPWM) can be divided into five-segment SVPWM and seven-segment SVPWM. In order to improve the reliability of the traction inverter, the junction temperature analysis and lifetime prediction of the key components of the IGBT module based on the task profile were carried out, and the effects of two different SVPWM modulation strategies on the device lifetime were studied. Firstly, the electrothermal model of traction inverter system of high-speed train was established, and the effects of EMU running speed and different SVPWM modulation strategies on device loss were analyzed; Then,taking the all-day simulation condition of a CRH3 EMU as an example, the junction temperature of power devices was calculated, and the junction temperature information of thermal cycle of power devices was extracted by rain fl ow counting method, including junction temperature fl uctuation and maximum junction temperature. Finally, the Norris-Landzberg lifetime model and Miner linear cumulative damage model were used to calculate the damage of power devices, and the lifetime of power devices under the two SVPWM modulation strategies was predicted and compared. The simulation results showed that the junction temperature fluctuation and maximum junction temperature cycle of the diode were larger than those of IGBT. Adopting the seven-segment SVPWM modulation strategy could prolong the life of the IGBT module by 17.8% and saved the maintenance cost of the EMU.

关键词

IGBT模块牵引逆变器寿命预测可靠性空间矢量脉宽调制CRH3型动车组高速列车

Keywords

IGBT moduletraction inverterlife predictionreliabilityspace vector pulse width modulationCRH3 EMUhigh-speed train

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