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Tilting Torque Calculation of a Novel Tiered Type Permanent Magnet Spherical Motor
IEEE Transactions on Industrial Electronics ( IF 7.5 ) Pub Date : 2-5-2019 , DOI: 10.1109/tie.2019.2896290
Lei Gan , Yulong Pei , Feng Chai

This paper proposes a novel tiered type permanent magnet spherical motor (T-PMSPM) of which the output torque is relatively higher than that of the most existing spherical motors. The proposed T-PMSPM has three stators along axial direction; each of the stator is consisted of an iron core and a three-phase winding. An analytical method is developed in order to calculate the tilting torque based on the air gap magnetic field distribution generated with the specific pole_slot combinations. For performance verification and accurate calculation, three-dimensional finite-element analysis (FEA) is adopted. Two typical rotor configurations are compared and analyzed, focusing on the ability of large torque production, especially for the tilting torque. Finally, a prototype motor as well as the auxiliary apparatus used for experimental measurements has been manufactured. Considering that the friction torque is nonnegligible, a test procedure of torque measurement and separation is designed and performed. The tilting torque obtained from the experiments is compared with the FEA results after friction compensation.

中文翻译:


新型分层式永磁球形电机的倾斜扭矩计算



本文提出了一种新型分层式永磁球形电机(T-PMSPM),其输出扭矩比大多数现有球形电机的输出扭矩相对较高。所提出的 T-PMSPM 沿轴向具有三个定子;每个定子由铁芯和三相绕组组成。开发了一种分析方法,以便根据特定极槽组合生成的气隙磁场分布来计算倾斜扭矩。为了进行性能验证和精确计算,采用三维有限元分析(FEA)。对两种典型的转子结构进行了比较和分析,重点关注产生大扭矩的能力,特别是倾斜扭矩。最后,制作出了原型电机以及用于实验测量的辅助装置。考虑到摩擦扭矩不可忽略,设计并执行了扭矩测量和分离的测试程序。将实验获得的倾斜扭矩与摩擦补偿后的有限元分析结果进行比较。
更新日期:2024-08-22
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