Patent ID: 8829758
Filing Date: 2014-09-09
Classification: H02K

Abstract:
1. A rotary electric machine, comprising: a stator; and a rotor provided on an inner side of the stator so as to be rotatable about a rotation shaft, wherein the rotor comprises, at an outer circumference thereof, magnetic poles arranged so as to have different polarities alternately, the magnetic poles being formed of a rotor core, wherein electromagnetic steel plates are stacked to form the rotor core, the magnetic poles being excited by permanent magnets that are respectively housed in a plurality of gaps disposed along a circumferential direction at an outer circumferential part of the rotor core, and wherein the rotor core comprises, at an inner circumferential part thereof, in a same stack plane: a short circuit magnetic path mutually connecting at least one set of magnetic pole pieces that form the magnetic poles, respectively; and a protruding portion held in contact with an inner circumferential side of each of the permanent magnets, between magnetic pole pieces that are not connected to the short circuit path.