Title :
AC losses in first and second generation high Tc tapes and MgB2 tapes
Author :
Ginocchio, Stefano ; Perini, Elena ; Jakomin, Roberto ; Fontana, Franco ; Zannella, Sergio ; Martini, Luciano
Author_Institution :
Edison S.p.A., Milano, Italy
fDate :
6/1/2005 12:00:00 AM
Abstract :
Technical and economical assessments for future power applications of High Tc superconductivity require the evaluation and comparison of AC losses in first and second generation high Tc tapes. An electrical and a thermometric method were developed and used to measure transport AC loss in OPIT Bi-2223/Ag tapes, Y-123 coated conductors and in new MgB2-based superconductors, simulating the AC conditions typical of power devices. The results were compared with analytical models for AC losses calculation. The effect of the magnetic substrates used in coated conductors was also investigated and a simple calculation model was proposed.
Keywords :
bismuth compounds; calcium compounds; lead compounds; losses; magnesium compounds; strontium compounds; superconducting materials; AC losses calculation; Bi2PbSr2Ca2Cu3O10-Ag; MgB2; OPIT Bi-2223/Ag tapes; Y-123 coated conductors; electrical method; first generation high Tc tapes; high Tc superconductivity; high-temperature superconductors; magnetic substrates effect; power devices; second generation high Tc tapes; thermometric method; transport AC loss; AC generators; Conductors; Electric variables measurement; Loss measurement; Power generation; Power generation economics; Power measurement; Power system economics; Superconducting devices; Superconductivity; AC losses; coated conductors; high-temperature superconductors; magnetic substrates;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.848245
