Title :
Finite element analysis of magnetic field in high temperature bulk superconductor
Author :
Chun, Yon-Do ; Kim, Youn-Hynn ; Lee, Ju ; Hong, Jung-Pyo ; Lee, Jong-Woo
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
fDate :
3/1/2001 12:00:00 AM
Abstract :
This paper presents the analysis of magnetic field in high temperature bulk superconductor (HTSC). The macroscopic field equations constructed on the basis of the critical state model and levitation forces are simulated between permanent magnets (PM) and HTSC using a 3D axisymmetric finite element method. The force computations are obtained by using the Lorentz force equation. An iteration method is used to determine the current distribution of HTSC, because the J-E relation in HTSC is extremely nonlinear. The numerical results show that the presented method is comparatively accurate by comparing the measured levitation forces and the simulation ones
Keywords :
barium compounds; finite element analysis; high-temperature superconductors; magnetic levitation; permanent magnets; yttrium compounds; 3D axisymmetric finite element method; Lorentz force equation; YBaCuO; critical state model; current distribution; finite element analysis; force computations; high temperature bulk superconductor; iteration method; levitation forces; macroscopic field equations; magnetic field; nonlinear J-E relation; permanent magnets; Computational modeling; Equations; Finite element methods; High temperature superconductors; Levitation; Lorentz covariance; Magnetic analysis; Magnetic fields; Permanent magnets; Superconducting magnets;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
