Measurement of the thermal characteristics of a stator-housing interface
Measurement of the thermal characteristics of a stator-housing interface
复制标题
定子-外壳界面热特性的测量
DOI：
10.1109/demped.2017.8062410
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Julian D Booker
中科院分区：
文献类型：
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作者：
Nick Simpson;T. Duggan;P. Mellor;Julian D Booker
对电机定子-外壳界面处的接触热导进行适当估计对于准确预测热性能是必要的，因为该材料界面通常位于主要的热提取路径上。然而，热接触传导是一种复杂的现象，受许多因素的影响，包括材料性能、界面压力和表面光洁度，这使得可靠的分析估计具有挑战性。本文采用简单的热流计，对在役条件下具有代表性的定子与壳体材料样品的接触热导进行了实验测量。这种方法可以测量和评估电机制造中遇到的各种材料组合、切割方法和表面光洁度，并可以量化原型和生产制造的电机之间的预期热性能偏差。
Proper estimation of the thermal contact conductance at the stator-housing interface of electrical machines is necessary for the accurate prediction of thermal performance, since this material interface typically lies in the main heat extraction path. However, thermal contact conductance is a complex phenomena influenced by many factors including material properties, interface pressure and surface finish, making reliable analytical estimates challenging. In this paper, a simple heat-flow meter is used to experimentally measure the thermal contact conductance between representative stator and housing material samples under in-service conditions. This approach allows the various combinations of materials, cutting methods and surface finishes encountered in electrical machine manufacturing to be measured and assessed and could enable the expected thermal performance deviation between prototype and production manufactured electrical machines to be quantified.