| 主权项 |
1. A rotating electric machine comprising:
a rotor; and a stator including a hollow cylindrical stator core and a stator coil mounted on the stator core, the stator core having a plurality of slots that are arranged in a circumferential direction of the stator core, the stator coil being formed of a plurality of substantially U-shaped electric conductor segments to include at least one Δ-Y connection, the Δ-Y connection being comprised of a Δ-connected first three-phase winding and a Y-connected second three-phase winding, the first three-phase winding including three phase windings that are Δ-connected to define three terminals of the first three-phase winding therebetween, the second three-phase winding including three phase windings that are respectively connected to the three terminals of the first three-phase winding, wherein the number of turns of the first three-phase winding and the number of turns of the second three-phase winding are respectively set to two different odd numbers, each of the substantially U-shaped electric conductor segments forming the stator coil includes a pair of in-slot portion, a turn portion and a pair of end portions, the in-slot portions being respectively received in two different ones of the slots of the stator core, the turn portion extending on one axial side of the stator core to connect the in-slot portions of the electric conductor segment, the end portions extending on the other axial side of the stator core respectively from the in-slot portions of the electric conductor segment and being respectively joined to corresponding end portions of another two of the electric conductor segments, each of the phase windings of the first and second three-phase windings includes at least one unit winding that is formed by joining the corresponding end portions of a predetermined number of the electric conductor segments so as to extend for one turn around the stator core, and each pair of the unit windings included in the same one of the phase windings of the first and second three-phase windings are connected to each other via one connecting electric conductor segment which has a substantially U shape different from that of the electric conductor segments forming the stator coil. |
