Study of frequency dependence of AC transport current losses in HTS conductors subject to DC background field

Author

Miyagi, D. ; Tsukamoto, O. ; Ciszek, M.

Author_Institution

Yokohama Nat. Univ., Japan

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

2449

Lastpage

2452

Abstract

To study a mechanism of AC transport current losses in HTS wires, the authors measured the AC transport current losses of two kinds of HTS wires subject to DC background magnetic field by changing frequency of currents. The tested wires are a multifilamentary Bi2223/Ag sheathed tape and YBCO thin film conductors. The measurement results show that the losses in the Bi/Ag sheathed tape and YBCO conductors deviate from the Norris model in different ways and are only weakly dependent on frequencies of transport currents. In this paper, measured results are presented and the loss characteristics are explained based on a numerical model which they made in a previous work to analyze the AC transport current losses

Keywords

barium compounds; bismuth compounds; cable sheathing; calcium compounds; copper compounds; high-temperature superconductors; lead compounds; loss measurement; numerical analysis; silver; strontium compounds; superconducting tapes; yttrium compounds; (BiPb)₂Sr₂Ca₂Cu₃O ₁₀-Ag; (BiPb)₂Sr₂Ca₂Cu₃O ₁₀-Ag HTSC wires; AC transport current losses; DC background magnetic field; Norris model; YBCO thin film conductor; YBa₂Cu₃O_7-δ HTSC wires; YBa₂Cu₃O₇; loss characteristics; measurement results; multifilamentary Bi2223/Ag sheathed tape; numerical model; Current measurement; Frequency dependence; Frequency measurement; High temperature superconductors; Loss measurement; Magnetic field measurement; Testing; Transistors; Wires; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.920358

Filename

920358