Stator for a dynamoelectric machine
First Claim
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1. 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.
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Abstract
A stator winding is constituted by first and second three-phase alternating-current windings. An output-wire lead wire of winding phase portions led out of Address 6 of a slot is bent so as to extend axially outward at a coil-end apex portion, and a neutral-point connection lead wire of the winding phase portions led out of Address 5 of the slots is bent so as to extend axially outward at a coil-end apex portion. The bent portions of the output-wire lead wires and the neutral-point connection lead wires extending axially outward are gathered together and a tube is mounted thereto.
27 Citations
8 Claims
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1. A stator for a dynamoelectric machine, said stator comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification