摘要
压接式绝缘栅双极性晶体管PP-IGBT(press-pack insulated gate bipolar transistor)模块因其优越的电气性能和可靠性,广泛应用于柔性直流换流阀等大功率应用场景。IGBT芯片结温的准确观测对于其运行状态的监测与剩余寿命的评估都非常重要。已有结温观测方法多是针对键合引线式IGBT,未考虑到压接式模块的特性,无法直接应用。首先,针对大容量换流阀中的压接式IGBT,提出了一种实用的模块导通压降与结温标定方法,并对结温在线估计的误差进行了全面分析。然后,基于ABB公司5SNA 3000K452300压接式IGBT模块(4500 V,3000 A)设计了结温标定方案,包括实验电路、温度标定范围选择、结温控制方式、测量电路及标定实验步骤。最后,基于脉冲测试平台,对所提方法进行了验证。实验结果表明,所提结温标定与观测方案有效,结温观测误差在±5℃以内,且能适用压接式IGBT模块存在差异的情况。
Press-pack insulated gate bipolar transistor(PP-IGBT)modules are widely used in high-power applications such as flexible DC converter valves owing to their superior electrical performance and reliability.Therefore,an accurate observation of the junction temperature of a IGBT chip is important for monitoring its operating status and evaluating its remaining lifetime.The existing junction temperature observation methods are mostly designed for bonded-lead IGBTs,which cannot be applied directly because the characteristics of PP modules are not taken into account.Aimed at the PP IGBTs in large-capacity converter valves,a practical method for calibrating the on-state voltage drop and junction temperature of modules is proposed,and the online estimation error of junction temperature is comprehensively analyzed.Then,a junction temperature calibration scheme is designed based on a 5SNA 3000K452300 PP IGBT module(4500 V,3000 A)produced by ABB,including experimental circuits,temperature calibration range selection,junction temperature control method,measurement circuits and calibration experimental procedure.Finally,based on a pulse test platform,the proposed method was verified.Experimental results show that the junction temperature calibration and observation scheme proposed was effective,the junction temperature observation error was within±5℃,and it can be applied to the case of differences in PP IGBT modules.
作者
肖凯
王振
严喜林
李文骁
胡剑生
刘平
XIAO Kai;WANG Zhen;YAN Xilin;LI Wenxiao;HU Jiansheng;LIU Ping(Electric Power Research Institute,CSG EHV Power Transmission Company,Guangzhou 510000,China;College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;Xuji Electric Co.,Ltd,Xuchang 461000,China;CPSS)
出处
《电源学报》
CSCD
北大核心
2024年第3期127-137,共11页
Journal of Power Supply
基金
南方电网公司科技资助项目(CGYKJXM20220108)。
关键词
压接式IGBT
结温标定实验
热敏电参数
导通压降
误差分析
Press-pack insulated gate bipolar transistor(PP-IGBT)
junction temperature calibration experiment
thermo-sensitive electrical parameter
on-state voltage drop
error analysis
