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首页> 外文会议>第19届国际稀土永磁及应用研讨会（19th International Workshop on Rare Earth Permanent Magnets amp; Their Applications）（REPM'06） >Amelioration of Coreless Permanent-Magnet Disk Synchronous Motor Based on FEM: Motor With Wedge Airgap
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Amelioration of Coreless Permanent-Magnet Disk Synchronous Motor Based on FEM: Motor With Wedge Airgap

机译：基于FEM的无铁芯永磁磁盘同步电动机的改进：带楔气隙的电动机

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摘要

A novel coreless PM (permanent magnets) disk synchronous motor, consisting of a single stator in the middle and twin rotors on both sides, is proposed in this paper. NdFeB magnets with high coercivity and high remanence are used, and a special arrangement of PM-Halbach array is employed to enhance the magnetic flux density in the airgap. Cylindrical PM array is stuck on the rotor to avoid the eddy current wastage, which is caused by reciprocal movement between the rotor and the PM array. The stator contains a winding molded by high mechanical integrity plastic without any core. Besides, the wedge airgap is designed to reduce the equivalent length of the airgap, and hence to advance the performance of the motor. The analysis of the magnetic field has been done by FEM method. An example motor of the design in this paper has been made, the magnetic flux density of which reaches 0.53 T, and the efficiency of the motor is above 92%.The motor has a better performance in each phase, and the aim of amelioration is achieved.
机译：提出了一种新型的无铁心永磁同步电动机，该电动机由中间的单个定子和两侧的双转子组成。使用具有高矫顽力和高剩磁的NdFeB磁体，并采用PM-Halbach阵列的特殊布置来提高气隙中的磁通密度。圆柱形PM阵列粘贴在转子上，以避免涡流浪费，该涡流浪费是由于转子和PM阵列之间的往复运动引起的。定子包含由高机械完整性塑料模制而成的绕组，没有任何铁芯。此外，楔形气隙设计为减小气隙的等效长度，从而提高电动机的性能。磁场的分析已经通过有限元方法完成。本文设计了一个示例性的电动机，其磁通密度达到0.53 T，电动机的效率超过92％，电动机在每个相中都有更好的性能，并且改善的目的是实现。

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