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Design of Polar Anisotropic Sintered NdFeB Ring-Type Permanent-Magnet for Brushless DC Motor

机译:无刷直流电动机的极性各向异性烧结钕铁硼环形永磁体的设计

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摘要

A Four polar anisotropic sintered NdFeB PM with high surface flux density was developed using dry pressing process with pulse magnetizing fields. In this paper, effects of filling density, magnetic field intensity, distribution of the cavity, and of the way of pre-magnetized powder for the high performance polar anisotropic sintered NdFeB PMs were studied. It can be seen that magnets produced by pre-magnetized powder process shows magnetic surface flux's maximum value that is 6,300 G due to pre-magnetized effects and that the back e.m.f. of Brushless motor, is 5.4 Vp/p per 1000 rpm, an increase about 35% above the conventional segment magnet.
机译:利用具有脉冲磁化场的干压工艺,开发了一种具有高表面通量密度的四极各向异性烧结NdFeB PM。本文研究了填充极性,磁场强度,腔体分布以及预磁化方式对高性能极性各向异性烧结NdFeB PMs的影响。可以看出,通过预磁化粉末工艺生产的磁体由于预磁化效应而显示出的磁表面通量最大值为6,300 G,而反电动势为f。无刷电动机的最大输出功率为每1000 rpm 5.4 Vp / p,比传统的扇形磁铁高出约35%。

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