Patent ID: 6894417
Filing Date: 2005-05-17
Classification: H02K

Abstract:
1. A hairpin wound stator for an electric machine, the stator comprising: a. a plurality of partially closed stator slots; b. a first winding set positioned in the stator slots, the first winding set comprising a first plurality of hairpins forming a first layer of conductors in the stator slots and a second layer of conductors in the stator slots, the first plurality of hairpins each including two legs with leg ends and each leg end bent to a desired configuration to form adjacent leg ends between the first layer of conductors and the second layer of conductors; c. a second winding set positioned in the stator slots, the second winding set comprising a second plurality of hairpins forming a third layer of conductors in the stator slots and a fourth layer of conductors in the stator slots, the second plurality of hairpins each including two legs with leg ends and each leg end bent to a desired configuration to form adjacent leg ends between (i) the second layer of conductors and the third layer of conductors and (ii) the third layer of conductors and the fourth layer of conductors; wherein the second winding set is joined to the first winding set by connecting at least one of the adjacent leg ends between the second layer of conductors and the third layer of conductors.