Patent ID: 8450899
Filing Date: 2013-05-28
Classification: H02K

Abstract:
1. A stator for an electric rotating machine, the stator comprising: a hollow cylindrical stator core having a plurality of slots that are formed in a radially inner surface of the stator core and spaced in a circumferential direction of the stator core; and a stator coil comprised of a plurality of electric wires mounted on the stator core, wherein each of the electric wires has first, second, . . . , nth in-slot portions and first, second, . . . , (n+1)th turn portions, where n is an integer not less than 4, the first to the nth in-slot portions are sequentially received in p of the slots of the stator core, where p is an integer not greater than n, the first to the (n+1)th turn portions are alternately located on opposite axial sides of the stator core outside of the slots to connect corresponding adjacent pairs of the first to the nth in-slot portions, each of the electric wires also has first and second end portions, the first end portion being closer to the first in-slot portion than any other of the in-slot portions of the electric wire, the second end portion being closer to the nth in-slot portion than any other of the in-slot portions of the electric wire, the first in-slot portions of the electric wires are located most radially outward and the nth in-slot portions are located most radially inward in the slots of the stator core, the stator coil is a multi-phase stator coil which is comprised of a plurality of phase windings, each of the phase windings of the stator coil is formed of at least two of the electric wires, the first end portion of one of the two electric wires is connected to the second end portion of the other electric wire, and the number of electric wires forming the stator coil is equal to the number of slots formed in the stator core.