Abstract
It is difficult to accurately simulate supercurrent in high-temperature superconducting bulk even by adopting the finite-element method. The equivalent electrical conductivity of high-temperature superconducting bulk, which has a strong nonlinearity according to the E- J power law, is introduced for the supercurrent analysis. However, the strong nonlinearity results in bad convergency of the nonlinear equation solvers, i.e., the Newton-Raphson (NR) method. Consequently, the unsuitable and/or undulating supercurrent is observed. Therefore, in this paper, the accuracy of the supercurrent analysis in the high-temperature superconducting bulk is discussed and a new method is proposed for the accurate high-temperature superconducting bulk simulation. Then, the method combined a line search with the NR method is adopted as a nonlinear equation solver, and the improvement of convergency and computation time are investigated.
| Original language | English |
|---|---|
| Pages (from-to) | 751-754 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 42 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2006 Apr |
Keywords
- E-J power law
- High-temperature superconducting (HTS) bulk
- Nonlinear equation solver
- Supercurrent distribution
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering