Title :
Electric field and losses at AC self field mode in MF composites
Author :
Fukui, S. ; Hlasnik, I. ; Tsukamoto, O. ; Amemiya, N. ; Polak, M. ; Kottman, P.
Author_Institution :
Yokohama Nat. Univ., Japan
fDate :
7/1/1994 12:00:00 AM
Abstract :
Studies of the current-voltage characteristics of typical superconducting wires under static and dynamic conditions up to 50 Hz frequency have revealed much higher instantaneous local loss power densities in an external DC magnetic field than those which occur by magnetization in a transverse AC magnetic field. In this paper, the measured loss characteristics are compared with theoretical ones derived from the critical state model, and the self field AC losses are also estimated. Possible errors that can result by applying the critical state model are discussed
Keywords :
composite superconductors; 50 Hz; AC self field mode; MF composites; critical state model; current-voltage characteristics; dynamic conditions; electric field; external DC magnetic field; instantaneous local loss power densities; losses; static conditions; superconducting wires; transverse AC magnetic field magnetisation; Critical current density; Current density; Electric fields; Frequency; Magnetic field measurement; Magnetic fields; Magnetization; Multifilamentary superconductors; Superconducting filaments and wires; Superconducting materials;
Journal_Title :
Magnetics, IEEE Transactions on
