Patent ID: 7847463

Claim:
An alternating-current dynamoelectric machine comprising: a stator including: a stator core in which slots extending in an axial direction are formed on an inner peripheral side; and a stator winding mounted to said stator core by winding conducting wires into said slots; and a rotatable rotor including: a field winding disposed inside said stator; a rotor core constituted by a first rotor core portion and a second rotor core portion each having claw-shaped magnetic poles disposed so as to cover said field winding and alternately intermesh with each other; and a plurality of permanent magnets disposed between adjacent claw-shaped magnetic poles and having magnetic fields oriented so as to reduce leakage of magnetic flux between said claw-shaped magnetic poles, a portion of a projected shape of said permanent magnets protruding outside a plane of projection formed by said adjacent claw-shaped magnetic poles overlapping when said claw-shaped magnetic poles are viewed in a direction of rotation of said rotor, wherein: a radially-innermost point of intersection of corner portions of said permanent magnets is outside a region of said plane of projection and is in a vicinity of an inner peripheral surface of said first rotor core portion or said second rotor core portion.