Stability of epoxy-impregnated AC superconducting winding

Author

Tsukumoto, O. ; Kobayashi, H. ; Akita, S.

Author_Institution

Fac. of Eng., Yokohama Nat. Univ., Japan

Volume

24

Issue

2

fYear

1988

fDate

3/1/1988 12:00:00 AM

Firstpage

1170

Lastpage

1173

Abstract

AC superconducting composite wires for 50-60-Hz application are susceptible to disturbances due to wire motions, because matrices of the wires are highly resistive CuNi. Instability of the wires is one of the most serious problems in developing AC wires of large current capacity. An effective technique to reduce the wire motions is to impregnate the windings. It is demonstrated that epoxy impregnation is an effective technique to stabilize AC superconducting windings and that the AC losses can be cooled sufficiently by heat conduction through the epoxy. The characteristics of epoxy-impregnated 100-kVA-class AC coils are experimentally and theoretically compared to those of non-impregnated coils.

Keywords

composite superconductors; machine windings; polymers; stability; superconducting machines; 100 kVA; 50 to 60 Hz; AC losses; CuNi; composite wires; epoxy-impregnated AC superconducting winding; heat conduction; large current capacity; stability; Cables; Conductors; Large-scale systems; Power transformer insulation; Stability; Superconducting coils; Superconducting filaments and wires; Superconducting magnets; Testing; Thermal conductivity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.11441

Filename

11441