大功率IGBT模块散热结构传热特性的数值分析
Numerical Analysis of Heat Transfer Characteristics in the High-Power IGBT Module Cooling Structures
李钢 1刘双华 1王运坤1
作者信息
摘要
为了解大功率绝缘栅双极晶体管(IGBT)模块散热结构的影响因素,文章以某高压变频器功率单元作为研究对象,通过数值分析方法,对比不同扰流柱形状、不同排布方式以及不同冷却工质对散热器传热性能的影响.结果表明:在圆形、水滴形、菱形、四边形以及六边形扰流柱中,六边形和四边形扰流柱换热能力最强;增加扰流柱密度和数量可提高散热器的换热性能,当扰流柱横向节距比等于2,纵向节距比等于1时,散热器的综合性能最优;散热器的换热性能随水溶液中乙二醇浓度增大而逐渐降低.
Abstract
To investigate the factors affecting the cool-ing structure of the high-power insulated gate bipolar tran-sistor(IGBT)modules,this study focuses on a high-voltage inverter power unit as the research subject.The effects by different types of spoiler shapes,arrangements,and cooling fluids on the heat transfer performance of the heat sink are compared by using numerical analysis methods in the paper.The results show that among circular,teardrop,diamond,rectangular,and hexagonal spoilers,the hexagonal and rect-angular spoilers have the highest heat exchange capacity.Increasing the density and number of spoilers can enhance the heat exchange performance of the heat sink.When the transverse pitch ratio of the spoilers is 2 and the longitu-dinal pitch ratio is 1,the heat sink exhibits the best overall performance.The heat exchange performance of the heat sink gradually decreases as the concentration of ethylene glycol in the water solution increases.
关键词
IGBT模块/水冷/对流换热/数值模拟Key words
IGBT module/water cooling/convection heat transfer/numerical simulation引用本文复制引用
出版年
2024
NETL
NSTL
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