南京航空航天大学学报（英文版）2021，Vol.38Issue(5)：726-736,11.
轴向磁通混合永磁电机齿槽转矩削弱方法研究
Cogging Torque Reduction in Axial Flux PMSM with Different Permanent Magnet Combination
摘要
Abstract
With the increasing requirement for the mechanical vibration and acoustic noise of the permanent magnet synchronous motor(PMSM)drive system,the demand for cogging torque reduction of PMSM has been considerably increased. To solve the problem of oversized cogging torque of axial flux PMSM,a rotor topology with hybrid permanent magnet is proposed to weaken the cogging torque. Firstly,the expression of the cogging torque of the axial flux motor is derived,and the influence of the pole-arc ratio of the permanent magnet on the cogging torque is analyzed. Secondly,the rotor structure with hybrid permanent magnet is adopted to reduce the cogging torque. According to the analytical analysis,the constraints of the size and pole-arc ratio between the hybrid permanent magnets are obtained,and the two permanent magnets related to the minimum cogging torque are determined. And the analysis results are verified by the finite element simulation. Furthermore,the motor performance with and without the hybrid permanent magnet is compared with each other. Finally,the cogging torque is significantly reduced by adopting a rotor structure with hybrid permanent magnets.关键词
轴向磁通永磁同步电机/转子结构/齿槽转矩/混合永磁/极弧比Key words
axial flux permanent magnet synchronous motor(AFPMSM)/rotor structure/cogging torque/hybrid permanent magnet/pole-arc ratio分类
信息技术与安全科学引用本文复制引用
王晓光,刘城,周晟,万子威,刘毅..轴向磁通混合永磁电机齿槽转矩削弱方法研究[J].南京航空航天大学学报（英文版）,2021,38(5):726-736,11.基金项目
This work was supported by the Natural Science Foundation of Hubei Province(No.2019 CFB759). （No.2019 CFB759）
