AC Loss Characterization of Striated Multifilamentary YBCO Coated Conductors
Abstract
The reduction of the magnetization losses by the multifilamentary structure was demonstrated successfully. The measured magnetization losses of multifilamentary YBCO-coated conductors apparently contain a hysteretic loss component in which the dissipated energy per cycle is independent of frequency and a coupling loss component in which the dissipated energy per cycle is proportional to frequency. Experimental results show that the striation for AC loss reduction is still effective even with the superconducting bridges between filaments. Using the two-dimensional FEM model for electromagnetic field analysis of coated conductors, the AC losses at various conditions were calculated numerically. The calculated losses are typical frequency-dependent AC characteristics of multifilamentary superconductors. The transverse resistances between filaments in the measured samples were determined through the comparison between the measured and calculated magnetization losses at small field amplitude. The magnetization losses calculated in a wide range of field amplitude using these transverse resistances reasonably agree with the measured magnetization losses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 29, 2005
- Accession Number
- ADA451863
Entities
People
- Naoyuki Amemiya
Organizations
- Yokohama National University