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US 11,081,920 B2Granted
Rotor wedges and layers and heat sinks
AssigneeHamilton Sundstrand Corporation
InventorsDebabrata Pal, Ashutosh Joshi
Life of this patent
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Abstract
A wedge for a wound rotor includes a wedge body. The wedge body has a first layer and one or more second layers interfused with one another to provide structural support and limit resistive heating of the wedge from current flow within the wedge body by windings spaced apart by the rotor wedge. Generator rotors and methods of making generator rotors are also described.
Claims17
A rotor wedge for a wound rotor, comprising:
- a wedge body having a plurality of layers interfused with one another to provide structural support and limit resistive heating of the wedge caused by current flow within the wedge body by windings spaced apart by the rotor wedge, the rotor wedge further comprising an insulating layer deposited over first and second winding faces and an apex of the wedge body, wherein the insulating laver extends contiguously between opposite longitudinal ends of the wedge body, wherein the apex is between the two winding faces on a radially inner side of the wedge body.
A wound rotor for a synchronous machine generator, comprising:
- a rotor body supported for rotation along a rotation axis and having a winding slot;
- first and second windings seated in the winding slot, the second winding offset circumferentially from the first winding;
- and;
- a rotor wedge seated in winding slot between the first winding and the second winding, the first winding abutting a first winding face of the wedge body, the second winding abutting a second winding face of the wedge body arranged of a circumferentially opposite the first winding face, and the wedge body electrically isolating the first winding from the second winding, the rotor wedge further comprising an insulating layer deposited over first and second winding faces and an apex of the wedge body, wherein the insulating layer extends contiguously between opposite longitudinal ends of the wedge body, wherein the apex is between the two winding faces on a radially inner side of the wedge body.
1 more element
Dependencies are inferred from the claim text.