Patent ID: 6515393
Filing Date: 2003-02-04
Classification: H02K

Abstract:
An automotive alternator comprising:a rotor rotatably supported in a bracket; and a stator provided with a cylindrical stator core in which a plurality of slots extending axially are formed circumferentially and a stator winding installed in said stator core, said stator being supported in said bracket so as to surround an outer circumference of said rotor, wherein said slots are formed in said stator core at a ratio of two per phase per pole, wherein said stator winding is provided with two three-phase alternating-current windings, each of said three-phase alternating-current windings being constructed by forming three single-phase winding portions installed in said slots into an alternating-current connection, and wherein each of said single-phase winding portions is constructed by installing a conductor wire such that winds of said conductor wire extend outwards from first and second ends of said slots are divided such that a predetermined number of said winds are directed in each of first and second circumferential directions, and enter slots located a predetermined number of slots away in said first and second circumferential directions, said single-phase winding portions being constructed by installing said conductor wire in a lap winding in said slots.