Additive amortisseur circuit
AssigneeHamilton Sundstrand Corporation
InventorsWilliam Louis Wentland, Eric W. Karlen, Dhaval Patel, Andrew R. Wilkinson
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Abstract
A method of manufacturing a rotor of an electric motor or an electric generator includes positioning a plurality of amortisseur bars and using additive manufacturing to place electrically conductive material. More specifically, positioning the amortisseur bars may include circumferentially positioning the bars around a rotor stack and using additive manufacturing to place electrically conductive material may include forming a non-solid pattern of electrically conductive material, such as a pattern of electrically conductive traces, across opposite axial ends of the rotor stack to electrically interconnect an amortisseur circuit.
Claims20
A method of manufacturing a rotor for an electric motor or an electric generator, the method comprising:
- positioning a plurality of amortisseur bars circumferentially around a rotor stack, wherein the plurality of amortisseur bars extend between a first axial end of the rotor stack and a second axial end of the rotor stack opposite the first axial end;
- and
- additively manufacturing electrically conductive material on the first axial end and the second axial end of the rotor stack;
- and
- electrically interconnecting the plurality of amortisseur bars together via the electrically conductive material to form an amortisseur circuit.
A rotor of an electric motor or an electric generator, the rotor comprising:
- a rotor stack comprising a central longitudinal axis, a first axial end, and a second axial end opposite the first axial end;
- a plurality of amortisseur bars circumferentially distributed around and radially outward of the central longitudinal axis of the rotor stack, wherein the plurality of amortisseur bars extend between the first axial end and the second axial end;
- and
- a first layer of electrically conductive material on the first axial end of the rotor stack;
- a second layer of electrically conductive material on the second axial end of the rotor stack;
- wherein the first layer of electrically conductive material and the second layer of electrically conductive material each comprises a non-solid pattern of electrically conductive traces.
An electric motor comprising:
- a stator;
- and
- a rotor, wherein the rotor comprises:
- a rotor stack comprising a first axial end and a second axial end;
- a plurality of amortisseur bars circumferentially distributed around the rotor stack;
- a first layer of electrically conductive material on the first axial end of the rotor stack;
- and
- a second layer of electrically conductive material on the second axial end of the rotor stack;
- wherein the first layer of electrically conductive material and the second layer of electrically conductive material each comprises a non-solid pattern of electrically conductive traces.
Dependencies are inferred from the claim text.