Winding assembly for rotary electric machine and method of manufacturing
AssigneeOtis Elevator Company
InventorsZbigniew Piech, Benjamin J. Watson
Life of this patent
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Abstract
A winding assembly for a rotary electric machine includes a stator. Also included is a plurality of radially extending teeth defining a plurality of slots therebetween. Further included is a winding segment disposed within each of the slots, the winding segment having a constant cross-sectional area along an entire length thereof and a cross-sectional geometric shape that varies at each turn along a height of the teeth.
Claims15
A winding assembly for a rotary electric machine comprising:
- a stator;
- a plurality of radially extending teeth defining a plurality of slots therebetween;
- and
- a winding segment disposed within each of the slots, the winding segment having a constant cross-sectional area along an entire length thereof and a cross-sectional geometric shape that varies at each turn along a height of the teeth.
The winding assembly of any of the preceding claims, wherein the winding segment comprises a wire surrounded by an insulating layer, the wire comprising copper.
The winding assembly of any of the preceding claims, wherein the rotary electric machine is a battery powered motor.
A method of manufacturing motor windings comprising drawing a wire through a plurality of dies, the plurality of dies varying in at least two dimensions to form the wire to be of a constant cross-sectional area along an entire length thereof and a varying cross-sectional geometric shape.
Dependencies are inferred from the claim text.