Numerical Analysis of Heat Transfer Characteristics in the High-Power IGBT Module Cooling Structures
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.
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