| abstract |
(57) [Summary] (Modifications) [PROBLEMS] To provide a low-noise rotating electric machine with a simple configuration and an electric vehicle using the same. A rotating electric machine includes a stator having a stator core on which a multi-phase stator winding is wound, and a rotor arranged to face the stator with a gap surface therebetween. An electromagnetic excitation force reducing groove 85 is provided on the surface of the rotor core of the rotor. A permanent magnet disposed inside a rotor core constituting the rotor, wherein the groove is a groove in which the circumferential length of the opening is larger than the depth, and the slot interval sh of the stator core; The ratio (w / sh) to the width w of the force reduction groove is 0.34 ≦ w / sh ≦ 1.1, and a plurality of electromagnetic excitation force reducing grooves are provided for each magnetic pole. |