PERMANENT MAGNET MOTOR AND METHOD FOR MANUFACTURING PERMANENT MAGNET MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a permanent magnet motor that increases demagnetization resistance with little reduction in generated torque and that improves gap flux density distribution so as to reduce torque ripple and cogging torque.SOLUTION: A plurality of permanent magnets 50 are embedded in the interior of a rotor core 40. At the time of manufacturing a permanent magnet motor 100, portions of the permanent magnets 50 with low demagnetization resistance are partially and uniformly demagnetized in advance.