| CPC H02K 3/28 (2013.01) [H02K 1/165 (2013.01); H02K 3/12 (2013.01)] | 18 Claims |
|
1. A stator assembly comprising:
a stator core including a plurality of slots configured to penetrate through the stator core in a circumferential direction, each of the slots including a plurality of layers in a radial direction; and
a plurality of hairpin coils configured to fasten and interconnect to the slots, respectively, to form a coil winding,
wherein the hairpin coils include a plurality of main coils having a first slot pitch, a plurality of anomalous coils having a second slot pitch different from the first slot pitch, and a plurality of leader coils,
in each of the slots, one of the plurality of main coils is disposed in each of a radially innermost layer of the layers, a radially outermost layer of the layers, and at least one intermediate layer of the layers between the innermost layer and the outermost layer,
one of the plurality of leader coils is disposed in each of the innermost layer and the outermost layer, and
one of the plurality of anomalous coils is disposed in at least one of the intermediate layers.
|