基于热敏感电参数法的大容量IGBT模块动态结温在线检测研究

发布时间：2018-05-21 05:09

本文选题：大容量IGBT模块 + 热敏感电参数法　；参考：《中国电机工程学报》2017年09期

【摘要】：绝缘栅双极型晶体管(insulated gate bipolar transistor,IGBT)在风力发电等大功率系统中应用广泛,其可靠性越来越受到学术界和工业界重视,鉴于结温是影响IGBT模块可靠性的重要因素,国内外学者提出了诸多基于热敏感电参数的结温提取方法,然而较少涉及大容量IGBT模块动态结温在线监测和测试的研究。设计和搭建了基于H桥拓扑的兆瓦级应用工况复现平台,可开展大功率变流系统的运行工况型式测试。以关断延迟时间为热敏感电参数,简要论述了其与器件结温和负载电流等运行工况的相关性,并通过实测构建了三维数据库。基于运行工况复现平台,研究了大容量IGBT模块在不同基波频率下的结温波动特征,并通过模块内置的负温度系数(negative temperature coefficient,NTC)热敏电阻进行结温波动对比,验证了以关断延迟时间进行IGBT模块结温在线提取和检测具有灵敏度高、响应速度快和易于集成的优点。
[Abstract]:Insulated gate bipolar transistors (IGBT) are widely used in high-power systems such as wind power generation. The reliability of IGBT has been paid more and more attention by academia and industry. In view of the fact that junction temperature is an important factor affecting the reliability of IGBT modules, the insulation gate bipolar transistors (IGBT) are widely used in high power systems such as wind power generation. Scholars at home and abroad have proposed a number of thermo-sensitive electrical parameters based junction temperature extraction methods, but less involved in large capacity IGBT module dynamic junction temperature on-line monitoring and testing research. Based on H-bridge topology, a megawatt application mode reappearance platform is designed and built, which can be used to test the operation mode of high-power converter system. The correlation between turn-off delay time and device junction and load current is briefly discussed, and a three-dimensional database is constructed by measuring. Based on the operating condition reappearance platform, the characteristics of junction temperature fluctuation of large capacity IGBT modules at different fundamental frequencies are studied, and the junction temperature fluctuations are compared by the negative temperature coefficient NT resistor built in the module. It is verified that on-line detection and detection of junction temperature of IGBT module with turn-off delay time has the advantages of high sensitivity, fast response speed and easy integration.
【作者单位】：浙江大学电气工程学院;
【基金】：国家重点基础研究发展计划(973项目)(2014CB247400) 国家自然科学基金项目(51490682,51677166)~~
【分类号】：TM46;TN322.8

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