Accession Number : AD0684441

Title :   PRELIMINARY STUDY OF THE HIGH-POWER SUPERCONDUCTING TRANSFORMER.

Descriptive Note : Technical note,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s) : Hitchcock,R. D.

Report Date : 05 DEC 1966

Pagination or Media Count : 34

Abstract : A mathematical analysis is given of the concept that the size of a heavy-duty power transformer can be significantly reduced by using superconducting windings. By solving the differential equations for an iron-core transformer with resistanceless windings, and deriving a general expression for leakage inductance, it is shown that the iron core is indispensable no matter how small the cross section of the winding conductor. Calculations, based on the d-c behavior of niobium-tin superconducting wire, lead to a lower limit of around 50% for the reduction in overall weight of transformers in the 10 megawatt class. Overall efficiency is computed for a superconducting transformer cooled by a Carnot refrigerator or a gas liquefier. An appendix describes experiments on small superconducting transformers. (Author)

Descriptors :   (*SUPERCONDUCTORS, TRANSFORMERS), (*TRANSFORMERS, SUPERCONDUCTIVITY), COILS, SUPERCONDUCTORS, NIOBIUM ALLOYS, TIN ALLOYS, CRYOGENICS, ELECTRIC WIRE, MATHEMATICAL ANALYSIS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE