Experimental Set Up to Measure AC Losses of HTS in Rotating Magnetic Field

Author

Ghoshal, Probir K. ; Coombs, T.A. ; Fair, Ruben ; Campbell, Archie M.

Author_Institution

Oxford Instrum. Supercond. (Nano Sci.), Oxfordshire

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

3199

Lastpage

3202

Abstract

The apparatus described here is designed to measure the total ac loss in 2G tape subjected to a rotating magnetic field of up to 1 Tesla applied perpendicular to the tape axis and at speeds of up to 3600 rpm, while carrying a transport current. Both thermal and electrical measurement techniques are incorporated in the apparatus. The data collected from the apparatus will be used to assist the design of superconducting machines in which the superconductor is used for the stator as well as the rotor and where the minimization of AC losses is crucial to the success of the machine. The measurement of ac losses will give results that are difficult to predict from mathematical modeling.

Keywords

barium compounds; high-temperature superconductors; magnetic fields; superconducting machines; superconducting tapes; yttrium compounds; YBCO conductors; ac loss; electrical measurement technique; high temperature superconductors; rotating magnetic field; rotor; superconducting machines; superconducting tapes; thermal measurement technique; transport current; Current measurement; High temperature superconductors; Loss measurement; Magnetic field measurement; Mathematical model; Measurement techniques; Rotation measurement; Stators; Superconducting films; Velocity measurement; AC loss; HTS; YBCO conductors; ferromagnetic loss; rotating magnetic field; superconducting tapes;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.897419

Filename

4278103