Patent ID: 6188157
Filing Date: 2001-02-13
Classification: B60L,H02K,Y02T

Abstract:
An electrically driven motor vehicle, including a permanent magnet dynamo electric machine as a part of a driving mechanism, wherein said permanent magnet dynamo electric machine comprises:a stator having a stator iron core in which a stator winding is wound,a rotor facing the inner circumference of said stator and rotatably supported thereby, said rotor being constituted by a columnar rotor iron core,a shaft provided along the rotation axis of said rotor iron core, and,a plurality of permanent magnets arranged in a ring along the circumference of said rotor iron core,wherein a number of permanent magnet insertion holes equal to the number of permanent magnets are provided completely within the circumference of said rotor iron core, and said permanent magnets are positioned in the insertion holes and completely within the circumference of said rotor iron core at positions at which a ratio R1/R0 is equal to or more than 0.85, where R0 is the radius of said rotor and R1 is the radius of an imaginary circle drawn by inscribing the faces of the plurality of permanent magnets at the side thereof remote from said stator.