分数槽永磁同步电机径向电磁力研究

Research on Radial Electromagnetic Force of Permanent Magnet Synchronous Motor with Fractional Slot

由于分数槽永磁同步电机每极磁路分布不同,相比整数槽时更容易产生低次径向电磁力波,对电机的振动和噪声影响较大。从气隙磁场入手,对分数槽永磁同步电机径向电磁力及力波次数和频率进行解析计算,并以一台12槽10极分数槽永磁同步电机为例,进行了有限元仿真验证与分析,仿真结果表明解析计算结果正确。

Due to the different magnetic circuit distribution of each pole,the fractional-slot PMSM is more likely to generate low-order radial electromagnetic force waves than the integer groove PMSM,which has a great influence on the vibration and noise in the motor. The radial electromagnetic force of the fractional slot PMSM as well as the orders and frequencies of the force wave are analyzed and calculated in the air-gap magnetic field. The finite element simulation is carried out in a 12-slot 10-pole fractional-slot PMSM taken as an example. The simulation results show that the analytical calculation results are correct.