Electrically insulating composition used in conjunction with dynamoelectric machines

Active Publication Date: 2017-12-21
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent is about an electrically insulating composition that is used as an insulating material for generator components. The composition has a thermal conductivity of 0.2 to 1.3 W / m-K when measured at 130C. The composition includes a filler material that has a combination of glass, boron nitride, and fused silica. The composition also includes a resin, such as Bisphenol A resin, which is used in a small amount. By using this composition, components can be effectively insulated and heat can be transferred away from them.

Problems solved by technology

Large or utility scale generators produce large amounts of power, and also produce heat due to the large currents passing through the conductors.

Method used

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  • Electrically insulating composition used in conjunction with dynamoelectric machines
  • Electrically insulating composition used in conjunction with dynamoelectric machines
  • Electrically insulating composition used in conjunction with dynamoelectric machines

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Embodiment Construction

[0009]One or more specific aspects / embodiments of the present invention will be described below. In an effort to provide a concise description of these aspects / embodiments, all features of an actual implementation may not be described in the specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with machine-related and system-related constraints, which may vary from one implementation to another. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

[0010]When introducing elements of various embodiments of the present invention, the articles “a,”“an,” and “the” are intended to mean t...

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Abstract

An electrically insulating composition comprising about 25 to about 55 percent by weight of filler materials, about 45 to about 75 percent by weight of resin. The percentages being selected such that the total percentage of components does not exceed 100 percent. The composition has a thermal conductivity of about 0.2 to about 1.3 W / m-K when measured at 130° C.

Description

BACKGROUND OF THE INVENTION[0001]The composition described herein relates generally to an electrically insulating composition for use with dynamoelectric machines and, more specifically, to an insulating composition having improved thermal conductivity.[0002]Large or utility scale generators produce large amounts of power, and also produce heat due to the large currents passing through the conductors. Generators employ indirect or direct cooling with air, hydrogen or water, depending on the amount of power generated and the amount of cooling required. Specific areas of the generator may benefit from additional electrical insulation due to close proximity of neighboring generator components. Series loops and phase leads connect the multiple stator loops together, are external to the stator core and are in close proximity to each other. One series loop may be at ground potential and an adjacent series loop could be at full voltage potential. Therefore, electrical insulation is placed ...

Claims

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Application Information

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IPC IPC(8): C09K5/14H02K3/30H01B3/42
CPCC09K5/14C08K3/40C08K2003/385H02K3/30C08K3/36C08K7/04C08K7/18
InventorSHEAFFER, JEFFREY DAVIDWARDELL, DAVID JOHNPOWERS, JESSICA MARYFRANCESE, STEPHEN FRANK
OwnerGENERAL ELECTRIC CO