BorgWarner Inc.
Distributed stator winding having parallel paths with crossing end loops

Abstract:

An electric machine includes a stator core having a plurality of slots formed therein and a winding positioned in the slots of the stator core. The winding includes eight parallel paths distributed in layers of the stator core. The eight parallel paths include four pairs of adjacent paths. A first pair of adjacent paths crisscrosses a second pair of adjacent paths in the layers of the stator core. A third pair of adjacent paths crisscrosses a fourth pair of adjacent paths in the layers of the stator core. Neither the first pair nor the second pair of adjacent paths crisscrosses one or both of the third pair and the fourth pair of adjacent paths in the layers of the stator core.