A permanent magnet motor includes a stator, and a rotor having a rotor core disposed opposing an inner side of the stator across an air gap, a permanent magnet disposed in a circumferential direction of the rotor core, and a field pole of the rotor core in which the permanent magnet is disposed, wherein the field pole has a radius smaller than an arc centered on a shaft attached to an inner side of the rotor, a multiple of a slit whose longitudinal axial direction is a radial direction of the rotor core are formed in the field pole, and an interval between a first central line positioned between a multiple of the slit and a second central line positioned between a neighboring multiple of the slit is enlarged as the first central line and the second central line head toward an outer peripheral side of the rotor core.
Permanent magnet motor
2022-08-02
Patent
Electronic Resource
English