Abstract: A stator for a dynamoelectric machine having a primary phase winding arranged in a plurality of winding receiving slots and including at least two coil groups defining at least two predetermined primary magnetic poles. An auxiliary phase winding defining at least two auxiliary magnetic poles angularly displaced from the primary magnetic poles. The at least two predetermined magnetic poles having a polar axis. Each primary phase winding coil group is symmetrical about the polar axis. The first slot each side the axis established by the first phase winding is of a first predetermined size, three slots next adjacent each first slot are of a second predetermined size, and two slots of a third predetermined area are next adjacent to the slots of the second predetermined area. The slots of the third predetermined size are larger than the slots of the second predetermined size and the slots of the second predetermined size are larger than the slots of the first predetermined size.

Abstract: A stator, for use in an alternating current motor, includes a core having a plurality of angularly spaced slots. A distributed main winding is concentrically arranged in a plurality of the slots, with these slots encompassing a first arcuate region of the core, less than its circumference. End turns for the main winding are positioned adjacent an end face of the first arcuate region of the core. This provides a second arcuate region of at least one end face of the core free of the main winding. In a first embodiment, an auxiliary winding, displaced in phase from the main winding, is received in a plurality of the slots, including at least some slots in the second arcuate region. In the first embodiment, end turns of the auxiliary winding in the second arcuate region are disposed inwardly of the radially outermost edges of the slots in the second arcuate region along at least one end face of the core.