Patent ID: 7514834

Claim:
A permanent magnet type three-phase ac generator for a vehicle having an engine, said generator comprising: a stator having a stator core with 3n (n is an integer) teeth disposed in a circumferential direction at equal intervals and an armature winding having Δ-connected three phase windings with three output ends from which electric power is supplied to an electric load; and a rotor driven by said engine, said rotor having 4n permanent magnet poles disposed to confront said teeth, wherein said armature winding includes 3n coils each of which is wound around one of said teeth in the same winding direction and has first and second ends, the first end of each coil wound around one of said teeth is connected to the second end of another coil that is wound around a tooth disposed fourth from the one of said teeth to form one of said three phase-windings, and an electric angle between coils wound around adjoining teeth is 240°.