Three-phase alternating current motor
AssigneeMitsubishi Industries Automotive Thermal Systems Co., Ltd.
InventorsMakoto Hattori, Shinichi Isobe, Mikito Sasaki
Life of this patent
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Abstract
When stator winding wires of respective phases are concentratedly wound on a plurality of tooth portions provided on a stator iron core via insulating bobbins the stator winding wires of the respective phases are wound in winding spaces in slot sides so that winding heights become gradually higher toward outside diameter sides from inside diameter sides of the insulating bobbins, and in spaces formed by the stator winding wires, at the radial insides of the insulating bobbins, at outsides in an axial direction relative to the stator winding wires, connecting wires of the stator winding wires of the respective phases and a neutral point at which distal ends thereof are star-connected are placed along the spaces.
Claims7
A three-phase AC motor including a stator in which a plurality of tooth portions are provided at an inner circumferential side of a stator iron core, and stator winding wires of U, V and W phases are concentratedly wound respectively on each of the tooth portions via an insulating bobbin,
- wherein a plurality of slots each of which is formed between the tooth portions are configured so that winding spaces are formed to be gradually wider toward an outside diameter side,
- wherein in the winding spaces, the stator winding wires of the respective phases are wound so that winding heights become gradually higher toward outside diameter sides from inside diameter sides of the insulating bobbins, and
- wherein in spaces that are formed by the wound stator winding wires at the inside diameter sides of the insulating bobbins and at an outer side in an axial direction relative to the wound stator winding wires, connecting wires of the stator winding wires of the respective phases and a neutral point at which distal ends of the winding wires are star-connected are placed along the spaces.
Dependencies are inferred from the claim text.