高电压技术2017，Vol.43Issue(11)：3683-3689,7.DOI:10.13336/j.1003-6520.hve.20171031025
SPWM模式下逆变器中IGBT结温的快速评估方法
Rapid Assessment Method of IGBT Junction Temperature in Inverter Under Sinusoidal Pulse Width Modulation
摘要
Abstract
In order to improve the simulation speed of insulated gate bipolar transistors (IGBT) junctions in sinusoidal pulse width modulation (SPWM),the Gauss Seidel iteration method was applied in the study of the IGBT junction temperature computation.The method of calculating the junction temperature of the switching period was analyzed,and then the iterative algorithm was used to calculate the junction temperature of power frequency cycle.Moreover,a comparison was conducted for the junction temperature obtained by this method,electro-thermal coupling model simulation,and optical fiber measurement experiment.The results show that,to obtain a 40 s junction temperature,it takes 15 min for the simulation method while the iterative calculation method only needs 20 s under the same accuracy,namely,the computation speed can increase by nearly 50 times.The increased computation speed by using iteration method can meet the requirements of long-term evaluation for junction temperature of IGBT module in inverter,which is significant for the life prediction of IGBT.关键词
IGBT/高斯赛德尔/迭代计算/开关周期/工频周期/结温Key words
IGBT/Gauss Seudel/iterative calculation/switching period/frequency period/junction temperature引用本文复制引用
李志刚,李雄,张强,王嘉,王雷..SPWM模式下逆变器中IGBT结温的快速评估方法[J].高电压技术,2017,43(11):3683-3689,7.基金项目
国家高技术研究发展计划(863计划)(2015BAA09B01) （863计划）
国家自然科学基金(51377044).Project supported by High-tech Research and Development Program of China (863 Program) (2015BAA09B01),National Natural Science Foundation of China (51377044). （51377044）
