Stator and stator winding method and apparatus
AssigneeGlobe Products Inc.
InventorPatrick A. Dolgas
Life of this patent
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Abstract
A wound stator for a permanent magnet electric machine has an array of coils on the outer rim of a generally cylindrical stator body. The stator coils are wound directly on the stator body by providing the stator body with a plurality of mutually circumferentially-spaced, coil-retaining and forming members around which the ends of the stator coils are coursed so that the coil sides project in a direction parallel to the center axis of the stator. Wire connections are formed between coils of a phase, and wire loops are formed between the last wound coil of one phase and the first wound coil of a subsequently wound phase. Mechanisms are provided for clamping the stator start wires and for temporarily retaining the wire loops.
Claims4
A stator assembly for a permanent magnet motor comprising:
- a stator core having a circular first end face and a circular second end face, said end faces having outer margins spaced by and joined to a cylindrical outer wall, said cylindrical outer wall having a center axis, said end faces being centered on a common axis which is coincident with the center axis of said cylindrical outer wall;
- a first set of axially-outwardly projecting coil-retaining members mounted in mutually-spaced relation on the outer margin of said first end face;
- a second set of axially-outwardly projecting coil-retaining members mounted on the outer margin of said second end face, with individual ones of said coil-retaining members of said second set being aligned with individual ones of said coil-retaining members of said first set;
- and
- wound poles on said stator core formed from individual coils each having sides extending along said outer wall, a first end extending over said first end face and a second end extending over said second end face, and corners joining said sides and said first and second ends, said corners formed around aligned pairs of said first and said second set of coil-retaining members.
Dependencies are inferred from the claim text.