Patent ID: 6791228
Filing Date: 2004-09-14
Classification: H02K

Abstract:
A stator for a dynamoelectric machine, said stator comprising:a cylindrical stator core in which a plurality of slots are disposed in a circumferential direction; and a stator winding having a plurality of winding sub-portions each formed by installing a conductor wire so as to be returned outside said slots at end surfaces of said stator core and to alternately occupy an inner layer and an outer layer in a slot depth direction within said slots at intervals of a predetermined number of slots, return portions of said conductor wires returned outside said slots being arranged regularly in a circumferential direction to constitute coil end groups, wherein: said stator winding comprises at least one three-phase alternating-current winding constructed by Y-connecting three winding phase portions composed of said plurality of winding sub-portions; neutral-point connection lead wires of said three winding phase portions are each led out of a layer other than an outermost layer inside said slots, and one of output-wire lead wires of each of said three winding phase portions is led out of said outermost layer inside said slots; and said output-wire lead wires are positioned further inside than an outermost diameter of said coil end group relative to a radial direction.