一种应用于柔性直流输电的IGBT散热仿真建模及分析方法  

Modeling and Analysis of IGBT Thermal Dissipation for Flexible HVDC Transmission

作　　者：杨晓平 雒雯霞 骆妮 

机构地区：[1]西安西电电力系统有限公司,西安710065

出　　处：《高压电器》2017年第12期129-133,139,共6页High Voltage Apparatus

基　　金：国家重点基础研究发展计划项目(2016YFB0901003)~~

摘　　要：结合柔性直流输电功率模块的机械结构特点,通过对功率模块进行的合理等效简化,建立一种仿真模型。该仿真模型考虑了功率模块内部所有热源,并通过柔性直流输电运行原理,确定各热源损耗。此方法不但避免了网格划分的失败,还可以真实再现功率模块内部各热源的分布情况,有效地节约了仿真时间及计算机存储空间。基于该模型,利用Ansys软件对该仿真模型进行热仿真,并与试验结果相比,两者一致性好,验证了仿真建模及计算的合理性。A simulation model is built by equivalent mechanical structure of the flexible HVDC transmission simplification of the power module according to the power module. This simulation model considers all heat sources in the power module. The loss of each heat source is determined by the operation principle of the flexible HVDC transmission. This method can avoid failure of mesh generation, truely display distribution of the heat sources in the power module, and save time of simulation and computer storage space. The software Ansys is employed to complete simulation based on this model, and the simulation result coincide well with the experimental one, verifying the reasonability of the equivalently simplified model and simulation.

关 键 词：MMC IGBT 热仿真 柔性直流 

分 类 号：TM721.1[电气工程—电力系统及自动化]