Electric machine
AssigneeGeneral Electric Company
InventorsThomas Kupiszewski, Anil Kumar Tolpadi
Life of this patent
Estimating the term…
Abstract
An electric machine is provided herein that includes a stator assembly. The stator assembly includes a stator core having one or more lamination packages. The stator core can define an outer ring and a plurality of teeth extending from the outer ring. A cooling plate may be positioned adjacent to at least one of the one or more lamination packages. The cooling plate can define one or more channels therethrough. One or more windings can be arranged around one or more of the plurality of teeth of the stator core. A rotor can be operably coupled with the stator assembly. A cooling system can be fluidly coupled with the one or more channels of the cooling plate. The cooling system provides a cryogenic fluid through the one or more channels to cool the electric machine.
Claims19
An electric machine comprising:
- a stator assembly, the stator assembly comprising:
- a stator core including one or more lamination packages, the stator core defining an outer ring and a plurality of teeth extending from the outer ring;
- a cooling plate positioned adjacent to at least one of the plurality of lamination packages, wherein the cooling plate defines one or more channels therethrough, wherein the one or more channels includes a plurality of tributaries extending within one or more teeth of the plurality of teeth, wherein the plurality of tributaries is in fluid communication with the one or more channels, wherein the cooling plate is formed through an additive manufacturing process, wherein one or more exterior surfaces of the cooling plate are treated to increase thermal contact conductance and decrease electrical contact conductance;
- and
- one or more windings arranged around one or more teeth of the stator core;
- a rotor operably coupled with the stator assembly;
- and
- a cooling system fluidly coupled with the one or more channels of the cooling plate, wherein the cooling system provides a cryogenic fluid through the one or more channels.
An electric machine for an engine, the electric machine comprising:
- a stator assembly, the stator assembly comprising:
- a stator core including one or more lamination packages, one or more teeth, and an externally-overcoated cooling plate defining one or more internal cooling flow channels, wherein the one or more channels includes a plurality of tributaries extending within one or more teeth of the plurality of teeth, wherein the plurality of tributaries is in fluid communication with the one or more channels, wherein each lamination package includes at least one lamination and at least one foil, wherein the cooling plate separates a first lamination package and a second lamination package of the one or more lamination packages;
- and
- one or more windings arranged around the one or more teeth of the stator core;
- a rotor operably coupled with the stator assembly;
- and
- a cooling system fluidly coupled with the one or more channels of the cooling plate and providing a fluid along a flow axis of the one or more channels, wherein the one or more channels defines at least one dimple extending outwardly from the flow axis.
A method of manufacturing an electric machine for an engine, the electric machine comprising a rotor, a stator assembly, and a cooling system, the method comprising:
- receiving a lamination package that includes at least one lamination and at least one foil, the foil at least partially containing dysprosium;
- receiving an externally-overcoated cooling plate having one or more internal cooling
- flow channels, wherein the one or more cooling flow channels includes a plurality of tributaries extending within one or more teeth of a plurality of teeth defined by the stator assembly;
- aligning the lamination package and the cooling plate along a common axis;
- and
- fluidly coupling the cooling system to the one or more channels of the cooling plate.
Dependencies are inferred from the claim text.