电工技术学报2018，Vol.33Issue(9)：2024-2033,10.DOI:10.19595/j.cnki.1000-6753.tces.170883
基于结温监测的风电IGBT热安全性和寿命耗损研究
Study on Thermal Safety and Lifetime Consumption of IGBT in Wind Power Converters Based on Junction Temperature Monitoring
摘要
Abstract
For the insulated gate bipolar transistor (IGBT) modules applied in wind power converters, online monitoring method of junction temperature is studied, thermal safety and lifetime consumption are studied based on junction temperature sequences. Online monitoring model of IGBT module junction temperature was established. The model mainly includes wind turbine model, taking wind speed as an input variable, and the electrothermal coupling model, taking ambient temperature as an input variable. Three characteristic parameters were extracted from a sub-sequence with short time scale in the junction temperature sequences and three characteristic parameter sequences were developed from all the sub-sequences. Then the thermal safety was assessed and the lifetime consumption was quantitatively studied based on the Lesit lifetime model and linear damage accumulation theory. The results show that the main factors affecting IGBT module safety involves temperature fluctuations in winter, temperature fluctuations and high temperature (the temperature corresponds to the maximum probability of a temperature sequence at a certain period) in summer. Temperature difference is one of the main causes of IGBT damage and the lifetime consumption in summer is much higher than that in winter.关键词
风电变流器/绝缘栅双极型晶体管/实时结温/热安全性/损伤累积Key words
Wind power converters/insulated gate bipolar transistor/online junction temperature/thermal safety/damage accumulation分类
信息技术与安全科学引用本文复制引用
姚芳,胡洋,李铮,黄凯,李志刚..基于结温监测的风电IGBT热安全性和寿命耗损研究[J].电工技术学报,2018,33(9):2024-2033,10.基金项目
国家科技支撑计划(2015BAA09B01)、国家自然科学基金项目(51377044)、河北省自然科学基金重点项目(E2017202284)和河北省教育厅青年基金项目(QN2017316)资助. （2015BAA09B01）
