Novel Bearingless Motor Topology With Diamagnetic Salient-Pole Rotor
Novel Bearingless Motor Topology With Diamagnetic Salient-Pole Rotor
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DOI：
10.1109/tia.2022.3227527
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发表时间：
2023-03
影响因子：
4.4
通讯作者：
H. Sugimoto;Takuro Hashimoto;T. Arai;Haruhiko Suzuki;A. Chiba
中科院分区：
文献类型：
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作者：
H. Sugimoto;Takuro Hashimoto;T. Arai;Haruhiko Suzuki;A. Chiba
提出了一种新型的抗磁凸极转子无轴承电机拓扑结构。转子的材料是热解石墨（PG），使得转子的五个自由度被动地稳定在永磁体阵列上方。定子由两个部分组成：一个Halbach永磁体阵列和一个轴向磁通定子铁芯，该定子铁芯具有12个齿，用于固定八极三相绕组。被动悬浮力在永磁体单元和PG转子之间产生。在定子芯和PG转子之间产生旋转扭矩。介绍了PG转子五轴被动稳定无轴承电机的工作原理。在实验中，被动轴向力和加速过程进行了测量。试验中采用了开环速度控制。概念验证成功实现了稳定的被动悬浮，并允许加速高达200 r/min。
This article proposes a novel bearingless motor topology with diamagnetic salient-pole rotor. The material of the rotor is pyrolytic graphite (PG) so that five degrees of freedom of the rotor are passively stabilized above a permanent magnet array. The stator consists of two components: a Halbach permanent magnet array and an axial-flux stator core with twelve teeth holding the eight-pole three-phase winding. Passive levitation forces are generated between the permanent magnet unit and the PG rotor. Rotating torque is generated between the stator core and the PG rotor. In this paper, the principle of the five-axis passively stabilized bearingless motor with the PG rotor is outlined. In experiments, passive axial forces and an acceleration process are measured. In the test, open-loop speed control is used. The proof-of-concept successfully achieves stable passive levitation, and allows acceleration up to 200 r/min.