跨座式单轨车辆辅助逆变器IGBT模块失效分析  

Failure Analysis of IGBT Module for Auxiliary Inverter of Straddle Monorail Vehicles

作　　者：李仁彬 郭世成 谢双 刘云飞 甘文江 肖瑜 LI Renbin;GUO Shicheng;XIE Shuang;LIU Yunfei;GAN Wenjiang;XIAO Yu(Overhaul Company,Chongqing Rail Traffic(Group)Co.,Ltd.,Chongqing 401120,China)

机构地区：[1]重庆市轨道交通(集团)有限公司大修公司,重庆401120

出　　处：《铁道车辆》2023年第4期147-153,共7页Rolling Stock

摘　　要：辅助电源系统作为跨座式单轨车辆上的重要组成部分,主要通过控制辅助逆变器开关元器件IGBT的开合顺序,将直流电转化为交流电为车辆设备供电。文章以重庆轨道2号线84辆车为研究对象,主要针对跨座式单轨车辆辅助逆变器在长时间运行后的IGBT模块失效形式进行统计与研究,结合故障现象和运营环境提出针对性的解决方案和设备维保建议。通过对IGBT模块失效机理及特征指标的分析发现,跨座式单轨车辆辅助逆变器IGBT模块的主要失效形式为封装级失效,即键合线脱落,在外部特性上表现为导通压降值增大。根据以上分析研究,文章提出了针对此类问题的在线评估方法和相应的设备维保建议,对于提高辅助逆变器和车辆的运营效率以及节约设备维保的经济成本和时间成本方面具有借鉴意义。As an important part of straddle monorail vehicle,the auxiliary power system mainly converts direct current into alternating current to power vehicle equipment by controlling the opening and closing sequence of auxiliary inverter switching component IGBT.This paper takes 84 vehicles of Chongqing Transit Line 2 as the research object,mainly focuses on the statistics and research of failure forms of IGBT module of auxiliary coverter for straddle monorail vehicle after long-term operation,and proposes targeted solutions and equipment maintenance suggestions in combination with the failure phenomenon and operating environment.Through the analysis of IGBT failure mechanism and characteristic indexes,it is found that the main failure form of IGBT module of auxiliary converter for straddle monorail vehicle is packaging level failure,that is,the detachment of the bonding wire,which is manifested as an increase in the conduction voltage drop value.Based on the above analysis and research,the paper proposes an online assessment method for such problems and corresponding equipment maintenance recommendations,which are useful for improving the operational efficiency of auxiliary inverters and vehicles as well as saving the economic and time costs of equipment maintenance.

关 键 词：跨座式单轨车辆 辅助逆变器 IGBT模块 失效机理 维保建议 

分 类 号：U270.381[机械工程—车辆工程]