无盲区的大功率IPM设计与电流检测电路优化  

Design of High-Power IPM Without Blanking Time and Optimization of Current Detection Circuit

作　　者：孟昭亮[1] 艾胜胜 高勇[1] 杨媛[2] 吴磊 朱永灿[1] Meng Zhaoliang;Ai Shengsheng;Gao Yong;Yang Yuan;Wu Lei;Zhu Yongcan(School of Electronic Information,Xi'an Polytchnic University,Xi'an 710048,China;School of Automation and Information Engineering,Xi'an University of Technology,Xi'an 710048,China;CRRC Xi'an Yongdian Electronic Co,Ltd.,Xi'an 710016,China)

机构地区：[1]西安工程大学电子信息学院,西安710048 [2]西安理工大学自动化与信息工程学院,西安710048 [3]西安中车永电电气有限公司,西安710016

出　　处：《半导体技术》2020年第7期564-570,共7页Semiconductor Technology

基　　金：国家自然科学基金资助项目(51477138);陕西省重点研究开发项目(2017ZDXMGY-130);西安市科技计划项目(2017074CG/RC037(XAGC009));高校人才服务企业工程资助项目(2017080CG/RC043(XALG009))。

摘　　要：智能功率模块(IPM)是电力电子设备中的核心器件,为了保证系统安全可靠地运行,IPM电流检测尤为重要。为了提高大功率IPM在短路故障情况下快速检测电流的能力,设计了一种新型内部集成分流电阻的IPM拓扑结构,并制作了1 700 V/150 A的IPM。通过校准电路对分流电阻阻值进行校正和测试。结合IPM设计了相应的电流检测电路,并在双脉冲测试平台对电流检测电路进行了验证。比较了传统电流检测方法和内部集成分流电阻电流检测方法,以分析实时检测集电极电流。最后验证了所设计电路可以实时检测集电极电流,并通过IPM发生过流时,电流检测电路可以实时检测电流,并给驱动发送故障信号。该方法对大功率IPM电流检测技术具有重要的参考价值。Intelligent power module(IPM) is the core device of power electronic equipment. IPM current detection is particularly important to ensure the safe and reliable operation of the system. In order to improve the ability of high-power IPM to fast detect current in the event of a short-circuit fault, a new IPM topological structure with the internal integrated shunt resistance was designed, and an IPM with 1 700 V/150 A was fabricated. The shunt resistance was calibrated and tested by using the calibration circuit. The corresponding current detection circuit was designed with IPM, and the current detection circuit was verified on the double pulse test platform. The traditional current detection method and the internal integrated shunt resistance current detection method were compared to analyze the real-time detection of the collector current. Finally, it is verified that the designed circuit can detect the collector current in real time, and when an overcurrent occurs through the IPM, the current detection circuit can detect the current in real time and send a fault signal to the driver. The proposed method has an important reference value for high-power IPM current detection technology.

关 键 词：智能功率模块(IPM) 分流电阻 无盲区 电流检测 过流 

分 类 号：TN322.8[电子电信—物理电子学] TN307