Design of slit width to improve space harmonic distribution in a slit stator motor
Design of slit width to improve space harmonic distribution in a slit stator motor
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DOI：
10.1049/iet-epa.2018.5289
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发表时间：
2019-03
影响因子：
1.7
通讯作者：
Y. Yokoi;Ryuta Hashizume;T. Higuchi
中科院分区：
文献类型：
--
作者：
Y. Yokoi;Ryuta Hashizume;T. Higuchi
为改善狭缝定子电机气隙磁密的空间谐波分布，设计了狭缝磁阻的宽度。狭缝定子电机在定子的缠绕齿处有狭缝状的磁阻。定子设计可随缝隙宽度调整空间谐波分布。空间谐波分布控制着电机的扭矩和损耗。因此，在设计狭缝定子电机时，应明确空间谐波分布与狭缝宽度的关系。通过基于磁路模型的理论计算和有限元分析，研究了这种相关性。这些方法表明，产生驱动力矩的空间谐波在狭缝宽度处最大，其他主要有害空间谐波随着狭缝宽度的增加而减小。通过对测量转子的实验，验证了改进的空间谐波分布。
This article designs the width of slit-like flux barriers to improve the space harmonic distribution of the air-gap flux density in a slit stator motor. The slit stator motor has slit-like flux barriers at wound teeth of the stator. The stator design can adjust the space harmonic distribution with the slit width. Space harmonic distributions govern torque and losses in motors. For this reason, the dependence of the space harmonic distribution on the slit width should be clarified to design slit stator motors. The dependence is investigated through a theoretical calculation based on a magnetic circuit model and a finite element method analysis. These methods show that a space harmonic producing the drive torque is maximised at a slit width and other dominant detrimental space harmonics are decreased with the increase of the slit width. The improved space harmonic distribution is verified by performing an experiment with a measuring rotor.