Patent ID: 11949290
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A motor comprising:
a rotor having a rotor core having a magnet insertion hole, and a permanent magnet disposed in the magnet insertion hole, the rotor being rotatable about a rotation axis; and
a stator provided so as to surround the rotor, the stator having a stator core having a tooth facing the rotor, and a coil wound around the tooth,
wherein the permanent magnet has a thickness thicker than or equal to 2.1 mm in a direction in a direction in which the permanent magnet faces the stator and is magnetized in a direction of the thickness, and
wherein a minimum gap AG (mm) between the rotor and the stator, a winding number Nt of the coil around the tooth, an overcurrent threshold Ip (A) for a current flowing through the coil, and a coercive force Hct (kA/m) of the permanent magnet at a highest temperature in an operating temperature range of the motor satisfy:

Hct≥0.4×(Ip×Nt/AG)+410.