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Titolo:
A simple electromagnetic method of cyclic loss measurement for superconducting wires in a combined alternating transverse magnetic field and transport current
Autore:
Funaki, K; Kajikawa, K; Shiraishi, H; Iwakuma, M; Miyake, S; Kumano, T; Hasegawa, T;
Indirizzi:
Kyushu Univ 36, Res Inst Superconduct, Higashi Ku, Fukuoka 8128581, Japan Kyushu Univ 36 Fukuoka Japan 8128581 Higashi Ku, Fukuoka 8128581, Japan Showa Elect Wire & Cable, Kawasaki, Kanagawa 210, Japan Showa Elect Wire &Cable Kawasaki Kanagawa Japan 210 Kanagawa 210, Japan
Titolo Testata:
PHYSICA C
fascicolo: 1-4, volume: 310, anno: 1998,
pagine: 132 - 136
SICI:
0921-4534(199812)310:1-4<132:ASEMOC>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Keywords:
transport AC losses; external AC magnetic field; Poynting's vector; Bi-2223 tape; double-layered non-inductive coil;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
3
Recensione:
Indirizzi per estratti:
Indirizzo: Funaki, K Kyushu Univ 36, Res Inst Superconduct, Higashi Ku, 6-10-1 Hakozaki, Fukuoka Kyushu Univ 36 6-10-1 Hakozaki Fukuoka Japan 8128581 i, Fukuoka
Citazione:
K. Funaki et al., "A simple electromagnetic method of cyclic loss measurement for superconducting wires in a combined alternating transverse magnetic field and transport current", PHYSICA C, 310(1-4), 1998, pp. 132-136

Abstract

We measured cyclic losses in a superconducting wire, carrying alternating transport current, simultaneously exposed to an alternating transverse magnetic field. Samples of Bi-2223 Ag-sheathed tapes have configuration of a double-layer non-inductive coil, which itself is a pickup coil to measure theAC losses. Potential taps were attached to both terminals of the sample coil. The external field was applied along the axis of the sample coil. In this procedure, we can estimate an averaged Poynting's vector on a cylindrical surface between the two layers by means of signals from a pair of the potential taps and from pickup coils for the external magnetic field and the transport current. We can also measure a magnetization and an extended transport-current components of AC losses in addition to a total cyclic loss fora combined alternating external field and transport current. Obtained results are compared with numerical predictions of the critical state model taking into account the magnetic field dependence of critical current density. (C) 1998 Elsevier Science B.V. All rights reserved.

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Documento generato il 19/01/20 alle ore 20:29:37