Rotor slot liners
First Claim
Patent Images
1. A slot liner for a rotor assembly of a power system, the slot liner comprising:
- a metallic support member; and
a coating disposed on a coated side but not on an uncoated side of the metallic support member, the coating comprising a mixture ofa high thermal conductivity electrical insulating (HTCEI) filler, the HTCEI filler comprising particles of at least one of boron nitride, aluminum nitride, or a diamond material; and
a polyimide resin,wherein the coated side is configured to be oriented toward a winding of the rotor assembly and the uncoated side is disposed opposite the coated side and configured to be interposed between the coated side and a rotor core of the rotor assembly.
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0 Petitions
Accused Products
Abstract
A slot liner for a rotor assembly in one embodiment includes a metallic support member and a coating. The coating is disposed on at least one side of the metallic support member, and includes a mixture of a filler and a polyimide resin. The filler is a high thermal conductivity electrical insulating (HTCEI) filler, and includes particles of at least one of boron nitride, aluminum nitride, or a diamond material.
16 Citations
17 Claims
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1. A slot liner for a rotor assembly of a power system, the slot liner comprising:
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a metallic support member; and a coating disposed on a coated side but not on an uncoated side of the metallic support member, the coating comprising a mixture of a high thermal conductivity electrical insulating (HTCEI) filler, the HTCEI filler comprising particles of at least one of boron nitride, aluminum nitride, or a diamond material; and a polyimide resin, wherein the coated side is configured to be oriented toward a winding of the rotor assembly and the uncoated side is disposed opposite the coated side and configured to be interposed between the coated side and a rotor core of the rotor assembly. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A rotor assembly for a power system, the rotor assembly comprising:
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a rotor core having arms extending from a central portion and defining slots therebetween; windings passing through the slots, each winding disposed about a corresponding arm; and slot liners disposed in the slots and interposed between the windings and the rotor core, where the slot liners comprise; a metallic support member; and a coating disposed on a coated sided but not on an uncoated side of the metallic support member, the coating comprising a mixture of a high thermal conductivity electrical insulating (HTCEI) filler, the HTCEI filler comprising particles of at least one of boron nitride, aluminum nitride, or a diamond material; and a polyimide resin, wherein the uncoated side of the metallic support member is disposed opposite the coated side and interposed between the coated side and the rotor core, and the coated side is interposed between the metallic support member and the windings. - View Dependent Claims (8, 9)
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10. A method comprising:
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providing a metallic support member, a polyimide resin precursor, and a high thermal conductivity electrical insulating (HTCEI) filler, the HTCEI filler comprising particles of at least one of boron nitride, aluminum nitride, or a diamond material; mixing the polyimide resin precursor and the HTCEI filler to provide a coating; coating a coated side but not an uncoated side of the metallic support member with the coating to provide a liner material, wherein the uncoated side of the metallic support member is disposed opposite the coated side and configured to be interposed between the coated side and a rotor core, and the coated side is configured to be interposed between the metallic support member and windings; and curing the liner material. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification