中压IGBT模块用热电制冷集成微型平板热管散热器的研究

Integrated micro flat heat pipe heat sink for thermoelectric cooler of medium voltage IGBT module

为满足绝缘栅双极晶体管(insulated gate bipolar transistor,IGBT)模块散热器散热性能的要求,设计了一套用于中压IGBT模块散热的主动式散热器,以热电制冷器为核心,和微型平板热管热并联连接集成分离热通道散热器。基于一维稳态传热理论建立了分离热通道散热器的热阻网络模型,分析了该散热器在性能、经济方面比传统热电制冷散热器的优势。仿真结果表明,相比传统的径向热通道散热器,分离热通道散热器提高了热电制冷器的制冷系数,拥有更大的散热极限。与常规的水冷散热器对比结果表明,分离热通道散热器适用于高温环境的小功率场合。该研究成果为改进IGBT模块主动散热器性能提供了一定参考。

The paper designs an active heat sink for insulated gate bipolar transistor(IGBT)module heat dissipation in order to satisfy the requirements of medium voltage IGBT module heat sink for enhancing heat dissipation performance.The separate heat channel heat sink is composed of thermoelectric cooler(TEC)and micro plate heat pipe by thermal parallel connection.The thermal resistance network of the separate heat channel heat sink is established,based on the one-dimensional steady-state heat conduction theory.Compared with the traditional thermoelectric cooling heat sink,the advantages of separate heat channel heat sink are analyzed in cost and performances.The simulation results indicate that the separate heat channel heat sink has a higher coefficient of performance(COP)of thermoelectric cooler and larger heat dissipation capacity.The results show that the separate heat channel heat sink is suitable in high temperature environments for low power application compared with conventional water cooled heat sink.The research results provide a reference for improving the performance of IGBT module active heat sink.