Losses and Thermal Analysis of High Speed PM Machine

Jiqiang Wang, Fengxiang Wang, Xiaoguang Kong
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引用次数: 17

Abstract

There is increasing interest in high speed machines for industry applications due to the merits of high power density and small size. However, the heat dissipation of the high speed machine becomes a series problem also due to the small size and high power loss density. Therefore, how to estimate accurately the power losses and temperature rise is a big issue for the high speed machine design. In this paper, the calculation methods of power losses and temperature of high speed PM generator are studied. The air friction loss on the rotor surface is calculated by analytical method; and the core loss, copper loss and losses in the rotor are calculated based on the transient field-circuit coupled finite element analysis. The temperature field distribution of the machine is also analyzed using the finite element method. The calculated temperature is compared with the tested result for a high speed permanent magnet prototype machine.
高速永磁电机的损耗与热分析
由于高功率密度和小尺寸的优点,人们对高速机床的工业应用越来越感兴趣。然而,由于高速机床的体积小,功率损耗密度高,其散热也成为一个系列问题。因此,如何准确地估计出高速电机的功率损耗和温升是高速电机设计中的一个重要问题。本文研究了高速永磁发电机的功率损耗和温度的计算方法。采用解析法计算转子表面空气摩擦损失;基于暂态场路耦合有限元分析计算了铁芯损耗、铜损耗和转子损耗。采用有限元法对机床的温度场分布进行了分析。将计算温度与高速永磁样机的试验结果进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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