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US 7,605,505 B2Granted
Rotating electric machine rotor pole crossover
AssigneeHoneywell International Inc.
InventorsDavid R. Minke, David E. Stout, Simon L. Waddell
Life of this patent
Estimating the term…
Abstract
A rotor for use in a high speed electrical machine includes a shaft, a plurality of poles, a plurality of coils, and a rotor crossover that is relatively flexible, and that does not crack under the centrifugal forces and the mechanical and thermal cycles encountered during machine operation, startup, and shutdown. The poles extend radially outwardly from the shaft and are spaced apart from each other to form an interpole region, and the coils are wrapped around the poles. The rotor crossover is coupled between selected ones of the coils, and includes a stranded wire conductor and an insulator.
Claims19
A rotor for use in a high speed electrical machine, comprising:
- a shaft;
- first and second rotor poles, each rotor pole extending radially outwardly from the shaft and spaced apart from each other to form an interpole region therebetween;
- first and second coils wrapped around the first and second rotor poles, respectively;
- and
- a rotor crossover coupled to the first and second coils, the rotor crossover including:
- a stranded wire conductor having a first end section and a second end section, the first end section coupled to the first coil, the second end section coupled to the second coil, and
- an insulator continuously surrounding the stranded wire conductor between the first end and the second end sections,
- wherein the first end section and the second end section are disposed parallel to an axis of the shaft to enable the rotor crossover to accommodate centrifugal force exerted upon the rotor crossover by the rotation of the rotor, and the stranded wire conductor is removeably coupled to the coils to allow removal and replacement of a defective coil without further disassembly of the rotor.
5 more elements
A rotor for use in a high speed electrical machine, comprising:
- a shaft;
- first and second rotor poles, each rotor pole extending radially outwardly from the shaft and spaced apart from each other to form an interpole region therebetween;
- first and second coils wrapped around the first and second rotor poles, respectively, the first and second coils each including a plurality of turns of wire, the plurality of turns of wire including an innermost turn, an outermost turn disposed radially outward of the innermost turn, and a plurality of intermediate turns disposed between the innermost and outermost turns, each turn of wire including an inner surface and an outer surface that is disposed radially outward of the inner surface;
- first and second crimp terminals coupled to the outermost turn of the first and second coils, respectively;
- a coil interpole wedge positioned in the interpole region between the first and second coils;
- a coil interpole wedge retainer positioned over the coil interpole wedge, and interference fit between the first coil and a surface of the first rotor pole and the second coil and a surface of the second rotor pole;
- and
- a rotor crossover coupled to the inner surfaces of the first and second coil outermost turns, the rotor crossover including:
- a stranded wire conductor having a first end section and a second end section, the first end section coupled to the first crimp terminal, the second end section coupled to the second crimp terminal, and
- an insulator continuously surrounding the stranded wire conductor between the first end and the second end sections;
- wherein the stranded wire conductor enables the rotor crossover to accommodate centrifugal force exerted upon the rotor crossover by the rotation of the rotor and the crimp terminals are disposed to allow removal and replacement of a defective coil without further disassembly of the rotor.
8 more elements
A rotor for use in a high speed electrical machine, comprising:
- a shaft;
- first and second rotor poles, each rotor pole extending radially outwardly from the shaft and spaced apart from each other to form an interpole region therebetween;
- first and second coils wrapped around the first and second rotor poles, respectively;
- first and second crimp terminals coupled to the first and second coils, respectively;
- a coil interpole wedge positioned in the interpole region between the first and second coils;
- a coil interpole wedge retainer positioned over the coil interpole wedge, and interference fit between the first coil and a surface of the first rotor pole and the second coil and a surface of the second rotor pole;
- and
- a rotor crossover coupled to the first and second coils, the rotor crossover including:
- a stranded wire conductor having a first end section and a second end section the first end section coupled to the first crimp terminal, the second end section coupled to the second crimp terminal, and
- an insulator surrounding the stranded wire conductor between the first end and the second end sections;
- wherein the rotor crossover is substantially U-shaped between the first and second end sections;
- the first end section and the second end section are disposed parallel to an axis of the shaft to enable the rotor crossover to accommodate centrifugal force exerted upon the rotor crossover by the rotation of the rotor;
- and the crimp terminals are disposed to allow removal and replacement of a defective coil without further disassembly of the rotor.
10 more elements
Dependencies are inferred from the claim text.