Patent ID: 11888368
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC H

Claim 10:
11. A rotor having 2n (n is a natural number) magnetic poles, comprising:
at least one first permanent magnet forming part of an outer peripheral surface of the rotor and magnetized to have polar anisotropy; and
at least one second permanent magnet that is a different type from the at least one first permanent magnet, is adjacent to the at least one first permanent magnet in a circumferential direction of the rotor, has lower magnetic force than magnetic force of the at least one first permanent magnet, and is magnetized to have polar anisotropy, and
the at least one second permanent magnet is a single integral ring-shaped magnet,
the at least one first permanent magnet comprises two first permanent magnets, and
in a plane orthogonal to an axial direction of the rotor, an angle formed by two lines passing through adjacent ends of inner peripheral surfaces of the two first permanent magnets is smaller than an angle formed by two lines passing through both ends of the outer peripheral surface of the second permanent magnet between the two first permanent magnets, the adjacent ends being adjacent to each other in the circumferential direction.