| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary electric machine capable of reducing an eddy current loss occurring due to cross slot magnetic flux and a thermal expansion difference between upper and lower coil pieces caused by the eddy current loss.SOLUTION: A rotary electric machine has a rotor of which a rotating shaft is supported in a rotatable manner and an armature concentrically disposed with a shaft center of the rotating shaft around the rotor via a gap. The armature includes armature cores and armature windings. The armature is provided with a plurality of armature slots. The armature windings are embedded into the plurality of armature slots, have rectangular cross-section shapes in an inner diameter direction of the rotating shaft, are wound around by a plurality of stacked wire conductors and are constituted of a plurality of coil pieces connected to one another in series. A first width in a circumferential direction of the armature slot at a first position where a surface formed by extending a first surface opposite to the rotor out of surfaces of the coil piece located nearest to the rotating shaft intersects with a lateral surface of the armature slot is wider than a second width in a circumferential direction of a bottom surface that is a surface located furthest from the rotor out of surfaces of the armature slot. |
