摘要
牵引变流器作为交流传动系统的关键设备,分析其可靠性十分必要。考虑到牵引负荷特性,基于物理失效机理建立IGBT模块失效率模型,依据可靠性预计手册分析其他组件的可靠性,将各方法有机结合后提高可靠性分析效率与准确性。以结温为主要监测变量,提出了一套牵引变流器可靠性在线评估流程,为全面监测牵引变流器的安全可靠运行提供重要参考。
Traction converters are key equipment in AC transmission system,and their reliability analysis is very necessary.Considering the characteristics of traction load,an IGBT module failure rate model was established based on physical failure mechanism.The reliability of other components was analyzed according to the reliability prediction manual,and various methods were organically combined to improve efficiency and accuracy of reliability analysis.A set of online reliability evaluation process for traction converters was proposed,with junction temperature as the main monitoring variable,providing important reference for comprehensive monitoring of safe and reliable operation of traction converters.
作者
田航
TIAN Hang(Xi′an Railway Vocational and Technical Institute,Xi′an 710026,China)
出处
《电工技术》
2023年第22期154-156,共3页
Electric Engineering
基金
西安铁路职业技术学院2022年度立项课题“同相供电装置关键器件寿命预测研究”(编号XTZY22G11)。
关键词
牵引变流器
IGBT模块结温
可靠性在线监测
traction converter
IGBT module junction temperature
reliability online monitoring
