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首页> 外文会议>Thirtieth Annual Symposium on Incremental Motion Control Systems amp; Devices, Jul 23-26, 2001, Berkeley, California >THERMAL ANALYSIS USING LUMPED SCHEME AND THERMAL FEM COMPARISONS OF BLDC MOTORS
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THERMAL ANALYSIS USING LUMPED SCHEME AND THERMAL FEM COMPARISONS OF BLDC MOTORS

机译：集总方案的热分析和BLDC电机的热有限元比较

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摘要

Many industrial applications refer to brushless DC motors used at their potential limits. Two cases related to the motor configuration lead to high possible losses and consequently to the necessary knowledge of the thermal behavior of the motor. Referring to the motor synchronous frequency given by f_s = p * n : the first case corresponds to a relative low speed, but a high number of pole pairs (those motors generally produce a high torque and are used in direct drive applications); the second case to a low number of pole pairs, but a high speed. The iron losses are a key issue since the considered frequencies are over the usual range of the known field of magnetic material vendor characteristics. Furthermore, the excitation flux introduces high harmonic frequencies. This paper considers a motor with a high number of slots and poles. The iron losses are determined using both, a lumped magnetic scheme and 2D finite element method. A lumped thermal scheme of the motor is presented and compared to thermal 3D finite element method. Typical results and measurements are presented.
机译：许多工业应用都以其潜在极限使用无刷直流电动机。与电动机配置有关的两种情况会导致很高的可能损失，并因此导致对电动机热性能的必要了解。参照由f_s = p * n给出的电动机同步频率：第一种情况对应于相对较低的速度，但是磁极对数量很多（这些电动机通常产生高转矩并用于直接驱动应用中）。第二种情况是极对数少，但速度快。铁的损耗是一个关键问题，因为考虑的频率超出了磁性材料供应商特性已知领域的通常范围。此外，励磁通量引入高谐波频率。本文考虑具有大量槽和极的电动机。使用集总磁方案和2D有限元方法确定铁损。提出了电动机的集总热方案，并将其与热3D有限元方法进行了比较。给出了典型结果和测量结果。

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