Patent ID: 9601952
Date: 2017-03-21
CPC Classifications: H01F,H02K

Claim:
1. A magnet embedded rotor comprising: a first annular core in which first permanent magnets are embedded only in the first annular core; and a second annular core in which second permanent magnets independent from the first permanent magnets are embedded only in the second annular core, and which is fitted onto an outer periphery of the first annular core, wherein: the first permanent magnets and the second permanent magnets together constitute a plurality of field permanent magnets that are U-shaped; the first annular core and the second annular core are configured to rotate together without rotating relative to each other; the plurality of field permanent magnets are embedded in a circumferential arrangement within the rotor; the first permanent magnets are substantially U-shaped; and the second permanent magnets are aligned with arm portions of the first permanent magnets to form the U-shaped field permanent magnets.