Title :
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
fDate :
3/1/2001 12:00:00 AM
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; YBa2Cu3O7-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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
