Title :
Loss analysis of a model transformer winding
Author :
Jansak, L. ; Zizek, F. ; Jelinek, Z. ; Timoransky, Z. ; Piel, H. ; Polak, M.
Author_Institution :
Inst. of Electr. Eng., Bratislava, Slovakia
fDate :
6/1/2003 12:00:00 AM
Abstract :
In the paper we present an analysis of AC losses in windings of a 14 kVA superconducting transformer with Bi-2223/Ag winding. AC losses of individual pancake coils of the secondary winding were measured. Discussion of the meaning of AC loss measurements in individual pancakes is presented. Measurement of loss in short samples (critical current in external magnetic field, transport current losses) was done and the results were compared with losses in the winding under operating conditions using available published data. An effect of temperature on winding losses was also studied.
Keywords :
high-temperature superconductors; losses; power transformers; superconducting coils; superconducting transformers; transformer windings; 14 kVA; AC loss measurements; AC losses; Bi-2223/Ag winding; BiPbSrCaCuO-Ag; critical current; external magnetic field; loss analysis; model transformer winding; pancake coils; secondary winding; superconducting transformer; temperature; transport current losses; winding losses; Conductors; Critical current; High temperature superconductors; Loss measurement; Magnetic field measurement; Magnetic fields; Magnetic losses; Superconducting coils; Superconducting films; Windings;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.813067
