基于组合短路电流的不受老化影响的IGBT模块结温测量方法  

Junction Temperature Measurement of IGBT Based on Combined Short-circuit Current That Not Affected by Aging Effect

作　　者：杨舒萌 孙鹏菊[1] 杜雄[1] 刘奥博 罗全明[1] 李子东 YANG Shumeng;SUN Pengju;DU Xiong;LIU Aobo;LUO Quanming;LI Zidong(State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Shapingba District,Chongqing 400044,China;Equipment Management Department of State Grid Chongqing Electric Power Company,Shapingba District,Chongqing 400044,China)

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400044 [2]国网重庆市电力公司设备管理部,重庆市沙坪坝区400044

出　　处：《中国电机工程学报》2020年第18期5770-5778,共9页Proceedings of the CSEE

摘　　要：绝缘栅双极型晶体管(insulated gate bipolar transistor,IGBT)的结温精确在线测量对于功率变流器的热管理及可靠性研究具有重要意义。然而目前绝大多数温敏电参数都受到器件老化的影响,无法准确地描述老化进程中器件的结温信息。由于短路电流作为温敏电参数时,其测量结果受器件键合线老化的影响。为此,文中提出一种基于组合短路电流的IGBT模块结温测量方法,该方法可以消除键合线老化的影响。通过理论分析和模拟剪线实验分析键合线老化对所提结温测量方法的影响,并搭建实验平台,验证所提方法在运行变流器中在线测量结温的可行性。理论分析和实验结果表明,所提方法不仅能消除键合线老化对结温测量的影响,还具有线性度好、灵敏度较好及在线测量的优点。The accurate on-line measurement of the junction temperature of IGBT is of great significance for the study of thermal management and reliability of power converter. However, most of the temperature sensitive parameters are affected by the aging of the device, which cannot accurately describe the junction temperature information of the device in the aging process. When the short-circuit current is used as the temperature sensitive parameter, the measurement results are affected by the aging of the bond wire of the device. Therefore, this paper proposed a method of measuring junction temperature of IGBT module based on combined short-circuit current, which can eliminate the effect of aging of bond wire. The aging effect of bond wire on the junction temperature measurement method was analyzed by theoretical analysis and simulated wire cutting experiment and an experimental platform was built to verify the feasibility of the proposed method in the operation of converter. Theoretical analysis and experimental results show that the proposed method can not only eliminate the aging effect of bond wire on junction temperature measurement, but also has the advantages of good linearity, good sensitivity and on-line measurement.

关 键 词：绝缘栅双极晶体管 结温测量 组合短路电流 键合线老化 温敏电参数 

分 类 号：TM46[电气工程—电器]