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US 7,208,854 B1Granted
Rotor cooling system for synchronous machines with conductive sleeve
AssigneeHamilton Sundstrand Corporation
InventorsDaniel M. Saban, Jeffrey Hoobler
Life of this patent
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Abstract
A wound field synchronous machine includes direct oil cooling along a conductive sleeve with elongated semi-arcuate shaped channels which alternate with damper bar channels containing tie-rod supports structures. With a reduction in sleeve thickness permitted by the direct cooling, the overall weight of the machine is reduced.
Claims12
A generator system comprising:
- a rotor assembly including a rotor retaining sleeve which surrounds a main rotor core having a multiple of rotor laminations and a main rotor winding bundle, said multiple of rotor laminations stacked generally in a plane normal to an axis of rotation of said rotor assembly;
- and
- a coolant system in communication with said rotor assembly, said coolant system communicating a coolant oil between a periphery of said main rotor core and said sleeve, said coolant system communicating said coolant oil through at least one of a multiple of coolant channels generally parallel to said axis of rotation defined along an edge of said multiple of rotor laminations and through a main rotor winding bundle generally parallel to said axis of rotation, said main rotor winding bundle rotationally offset from said multiple of coolant oil channels;
- a spacer located between at least two layers of said main rotor winding, wherein said spacer is ribbon-shaped and weaved between said at least two layers of said main rotor winding.
1 more element
Dependencies are inferred from the claim text.