slot ripple

These analytical results show that the change of the slot width and pole pitch affect the performance of the motors greatly. It also demonstrates that skewing poles could efficiently decrease the torque ripple of PM motors.

分析结果表明，定子槽宽和极宽的变化会对电机性能产生较大影响，永磁电机采用斜极结构，可有效减小电磁转矩波动。

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The structure of similar pole and slot number can increase the winding pitch coefficient, and reduce cogging torque ripple effectively with the reasonable combination of pole number and slot number.

极槽数相近结构不仅可以提高绕组短距系数，而且极数和槽数的合理配比能够有效地削弱齿槽转矩。

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The torque ripple arosed by the slot effect in PM motor are more significant in the low speed hub motor for electric vehicle use.

永磁电机由于齿槽效应产生的定位转矩和转矩脉动，在转速较低的轮毂电机中尤为显著。

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