Patent ID: 11916438
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 28:
29. A magnetization apparatus to magnetize a permanent magnet of a rotor having the permanent magnet and an inter-pole portion which are arranged in a circumferential direction about an axis,
the magnetization apparatus comprising:
a magnetization yoke on which a coil is wound, the magnetization yoke surrounding the rotor;
a magnetization ring disposed between the magnetization yoke and the rotor; and
a power source to apply current to the coil,
wherein the magnetization ring comprises a magnetic portion facing a center of the permanent magnet in the circumferential direction, a nonmagnetic portion facing the inter-pole portion, and a nonmagnetic annular portion provided on at least one side of the magnetic portion and the nonmagnetic portion in a direction of the axis.