表贴式永磁电机永磁体优化设计

Optimization Design of Surface-mounted Permanent Magnet Motors

永磁电机具有较高的功率密度,并且维护方便,已广泛应用于工业生产和日常生活中。永磁电机的优化设计对于降低永磁体成本,节约资源具有重要意义。通过3种方法实现对表贴式永磁电机的优化设计,斜极型转子可以显著降低电机的齿槽转矩,正弦型转子可以进一步降低电机的转矩脉动,三次谐波注入型转子在降低转矩脉动的同时,还可以进一步提高电机的转矩密度。

The permanent magnet motor with high power density and easy to maintain, it has been widely used in industrial production and daily life. Permanent magnet motor design optimization is important for reducing the cost of the permanent magnet and conserving resources. In this paper, the main achievement of surface mount type permanent magnet motor design optimization through three methods, oblique-pole rotor can significantly reduce the cogging torque of the motor,sinusoidal-rotor can reduce torque ripple of the motor rotor,third harmonic injection reduce torque ripple, it is also possible to further improve the torque density of the motor.