In this paper, an online junction temperature monitoring method based on the on-state voltage under high collector current density measurements for IGBT power modules is proposed. Unlike the conventional junction temperature monitoring method, the presented method can extract the junction temperature during operation without altering the modulation strategy or topology of the converter. The proposed method is verified by simulations and the JEDEC-51 standard recommended approach. To accurately extract the on-state voltage during operation, a measurement circuit that combines the advantages of both the active MOSFET clamp and the diode clamp is designed and tested. It has been shown to have good accuracy and a rapid response time. After the calibration results are obtained, the presented method is applied to a three-phase voltage source converter controlled by a closed-loop SVPWM modulation strategy.

中文翻译：

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基于Vce测量的IGBT结温在线监测

本文提出了一种基于高集电极电流密度测量下导通电压的IGBT功率模块在线结温监测方法。与传统的结温监测方法不同，所提出的方法可以在不改变转换器的调制策略或拓扑结构的情况下提取操作期间的结温。所提出的方法通过仿真和 JEDEC-51 标准推荐的方法进行了验证。为了准确提取工作期间的导通电压，设计并测试了结合有源MOSFET钳位和二极管钳位优点的测量电路。它已被证明具有良好的准确性和快速的响应时间。得到校准结果后，