Stator structure with two layers of pre-wound coils
AssigneeDana Tm4 Inc.
InventorsGyula Bihari, Ruisheng Shi, Mohammad Adib Ghadamyari
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Abstract
An electric machine provided with a stator structure including internal and external layers of interleaved pre-wound coils made of rectangular wire coated with enamel insulation varnish is described herein. The two layers of pre-wound coils allow the use of slightly different size of pre-wound coils, which facilitates their insertion into the stator slots.
Claims11
A multi-phase electric machine comprising a rotor and a stator structure, the stator structure comprising:
- a generally cylindrical body including teeth defining coil-receiving slots;
- an internal and an external layer of interleaved electrically conducting coils inserted into the slots with the internal and the external layers separated by an insulating layer;
- each phase including coils provided on the internal layer of interleaved coils and coils provided on the external layer of interleaved coils.
A method of inserting pre-wound coils into coil-receiving slots defined by radially extending teeth on a surface of a stator of a multi-phase machine, the method comprising:
- inserting interleaved electrically conducting coils into the slots to form an internal layer of interleaved coils;
- inserting interleaved electrically conducting coils into the slots to form an external layer of interleaved coils;
- and
- forming a plurality of winding phases, each winding phase including coils provided on each of the internal and the external layers of interleaved coils.
Dependencies are inferred from the claim text.