Rotating machine, continuous winding coil, distributed winding stator and method for forming same

A technology of rotating electric machines and winding coils, applied in the shape/style/structure of winding conductors, electric components, manufacturing motor generators, etc., which can solve problems such as current density reduction
CN101515733AActive Publication Date: 2009-08-26HITACHI LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HITACHI LTD
Publication Date
2009-08-26

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Abstract

The invention relates to a rotating machine, a crank-shaped continuous winding coil, a distributed winding stator, and a method for manufacturing the rotating machine, the crank-shaped continuous winding coil and the distributed winding stator. The subject of the invention is that the small size and high-output rotating machine which has a coil end reduced than the prior rotating machine and realizes reduced current density is obtained when the coil adopts the distributed winding stator in a rectangular conductor. Conductor wires of which the cross section is rectangular are overlapped and wound, top parts at two ends are only deviated from the full width of the overlapped and wound wires, a crank shape is formed by a length in the interval range of adjacent slots, and the crank shape is inserted into a slot of the stator for formation.
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Description

technical field

[0001] The present invention relates to a rotating electric machine such as a motor or an engine, a crank-shaped continuous winding coil, a distributed winding stator, and methods for forming them. Background technique

[0002] The winding method of the stator includes concentrated winding in which coils are wound on each magnetic pole tooth in a concentrated manner, and distributed winding in which coils are wound across a plurality of slots and coils of different phases or same phases are overlapped at the ends of the coils. A stator with concentrated windings can reduce the size of the coil ends, which is effective in reducing the size and efficiency of rotating electrical machines. On the other hand, the stator with distributed winding can make the rotating magnetic field in the inner circumference of the stator close to a sine wave, which has higher output power than concentrated winding and can reduce noise. In addition, the two are used together, and ...

Claims

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