Ceramic electrical insulation for electrical coils, transformers, and magnets

Rice, John A; Hazelton, Craig S; Fabian, Paul E

Title: Ceramic electrical insulation for electrical coils, transformers, and magnets

Abstract

A high temperature electrical insulation is described, which is suitable for electrical windings for any number of applications. The inventive insulation comprises a cured preceramic polymer resin, which is preferably a polysiloxane resin. A method for insulating electrical windings, which are intended for use in high temperature environments, such as superconductors and the like, advantageously comprises the steps of, first, applying a preceramic polymer layer to a conductor core, to function as an insulation layer, and second, curing the preceramic polymer layer. The conductor core preferably comprises a metallic wire, which may be wound into a coil. In the preferred method, the applying step comprises a step of wrapping the conductor core with a sleeve or tape of glass or ceramic fabric which has been impregnated by a preceramic polymer resin. The inventive insulation system allows conducting coils and magnets to be fabricated using existing processing equipment, and maximizes the mechanical and thermal performance at both elevated and cryogenic temperatures. It also permits co-processing of the wire and the insulation to increase production efficiencies and reduce overall costs, while still remarkably enhancing performance.

Inventors:

Rice, John A ^[1]; Hazelton, Craig S ^[2]; Fabian, Paul E ^[3]

Longmont, CO
Lafayette, CO
Broomfield, CO

Issue Date:: 2002-01-01

Research Org.:: Composite Technology Development, Inc., Lafayette, CO

OSTI Identifier:: 874524

Patent Number(s):: 6407339

Assignee:: Composite Technology Development, Inc. (Lafayette, CO)

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES
H01B7/292 - {using material resistant to heat}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H01F5/06 - Insulation of windings
H01F6/06 - Coils, e.g. winding, insulating, terminating or casing arrangements therefor

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DOE Contract Number:: FG03-96ER82147

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: ceramic; electrical; insulation; coils; transformers; magnets; temperature; described; windings; applications; inventive; cured; preceramic; polymer; resin; polysiloxane; method; insulating; intended; environments; superconductors; advantageously; steps; applying; layer; conductor; core; function; curing; metallic; wire; wound; coil; step; wrapping; sleeve; tape; glass; fabric; impregnated; allows; conducting; fabricated; existing; processing; equipment; maximizes; mechanical; thermal; performance; elevated; cryogenic; temperatures; permits; co-processing; increase; production; efficiencies; reduce; overall; costs; remarkably; enhancing; preferred method; electrical insulation; electrical coil; /174/

Citation Formats


                    Rice, John A, Hazelton, Craig S, and Fabian, Paul E. Ceramic electrical insulation for electrical coils, transformers, and magnets.  United States: N. p., 2002. 
        Web.

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                    Rice, John A, Hazelton, Craig S, & Fabian, Paul E. Ceramic electrical insulation for electrical coils, transformers, and magnets.  United States.

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                    Rice, John A, Hazelton, Craig S, and Fabian, Paul E. Tue .  
        "Ceramic electrical insulation for electrical coils, transformers, and magnets".  United States.  https://www.osti.gov/servlets/purl/874524.

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@article{osti_874524,

  title        = {Ceramic electrical insulation for electrical coils, transformers, and magnets},

  author       = {Rice, John A and Hazelton, Craig S and Fabian, Paul E},

  abstractNote = {A high temperature electrical insulation is described, which is suitable for electrical windings for any number of applications. The inventive insulation comprises a cured preceramic polymer resin, which is preferably a polysiloxane resin. A method for insulating electrical windings, which are intended for use in high temperature environments, such as superconductors and the like, advantageously comprises the steps of, first, applying a preceramic polymer layer to a conductor core, to function as an insulation layer, and second, curing the preceramic polymer layer. The conductor core preferably comprises a metallic wire, which may be wound into a coil. In the preferred method, the applying step comprises a step of wrapping the conductor core with a sleeve or tape of glass or ceramic fabric which has been impregnated by a preceramic polymer resin. The inventive insulation system allows conducting coils and magnets to be fabricated using existing processing equipment, and maximizes the mechanical and thermal performance at both elevated and cryogenic temperatures. It also permits co-processing of the wire and the insulation to increase production efficiencies and reduce overall costs, while still remarkably enhancing performance.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2002},

  month        = {1}

}

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Works referenced in this record:

Inorganic and Hybrid Insulation Materials for ITER
book, January 1994

Schutz, James B.; Reed, Richard P.
Advances in Cryogenic Engineering Materials, p. 985-992
https://doi.org/10.1007/978-1-4757-9053-5_125

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Title: Ceramic electrical insulation for electrical coils, transformers, and magnets

Abstract

Citation Formats

Inorganic and Hybrid Insulation Materials for ITER book, January 1994

Inorganic and Hybrid Insulation Materials for ITER
book, January 1994