Patent ID: 7781934

Claim:
An alternating-current dynamoelectric machine comprising: a stator including: a stator core in which slots that extend in an axial direction are formed on an inner side; and a stator winding that is mounted to said stator core by winding conducting wires into said slots; and a rotatable rotor including: a field winding that is disposed inside said stator; a rotor core constituted by a first pole core and a second pole core that each have claw-shaped magnetic poles that are disposed so as to cover said field winding and that alternately intermesh with each other; and a permanent magnet that is disposed between two facing side surfaces of adjacent claw-shaped magnetic poles and that has a magnetic field that is oriented so as to reduce leakage of magnetic flux between said claw-shaped magnetic poles, said alternating-current dynamoelectric machine being characterized in that first and second magnetic bodies are respectively disposed on first and second circumferential side surfaces of said permanent magnet, wherein each of the first and second magnetic bodies has hexahedron shape, and wherein each of the first and second magnetic bodies are exposed when viewed from an outside in a radial direction.