Characteristics of epoxy-impregnated AC superconducting winding

Author

Tsukamoto, O. ; Ishigohka, T. ; Yamamoto, M. ; Tanaka, Y. ; Kobayashi, H.

Author_Institution

Yokohama National University, Yokohama, Japan

Volume

23

Issue

2

fYear

1987

fDate

3/1/1987 12:00:00 AM

Firstpage

1592

Lastpage

1595

Abstract

AC superconducting composite wires for 50-60 Hz application are very susceptible to disturbances due to wire motions, because main matrices of the wires are highly resistive CuNi. Instability of the wires is one of the most serious problems to develop AC wires of large current capacity. An effective technique to reduce the wire motions is to impregnate the windings. We investigated characteristics of the epoxy-impregnated AC superconducting windings. It was demonstrated that the stability was much improved by the impregnation, and that the AC losses could be cooled by the heat conduction through the epoxy without significant wire-temperature rise, provided that the thickness of the epoxy-impregnated layer was less than about 2 mm.

Keywords

Epoxy resin-insulated cables; Superconducting composites; Superconducting filaments/wires, mechanical factors; Conductors; Helium; Large-scale systems; Multifilamentary superconductors; Superconducting coils; Superconducting epitaxial layers; Superconducting filaments and wires; Temperature; Testing; Wounds;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1987.1065025

Filename

1065025