Title :
Stable magnetic levitation of soft ferromagnetic materials by flux pinning of bulk superconductors
Author :
Ohsaki, H. ; Takabatake, M. ; Masada, E.
Author_Institution :
Dept. of Electr. Eng., Tokyo Univ., Japan
fDate :
9/1/1997 12:00:00 AM
Abstract :
We have investigated electromagnetic force characteristics of magnetic levitation systems consisting only of bulk superconductors and an iron rail, which enable a stable levitation even at a standstill without active control by a magnetic gradient in space. A two-dimensional finite element analysis was used to study the fundamental and general characteristics of the levitation of soft ferromagnetic materials by flux pinning of bulk superconductors and the dependence of the levitation characteristics on the direction of the pinning flux
Keywords :
electromagnetic forces; ferromagnetic materials; finite element analysis; flux pinning; high-temperature superconductors; magnetic levitation; soft magnetic materials; HTSC; bulk superconductors; electromagnetic force characteristics; flux pinning; iron rail; magnetic flux distribution; magnetic gradient; pinning flux direction dependence; soft ferromagnetic materials; stable magnetic levitation; two-dimensional finite element analysis; Control systems; Electromagnetic forces; Force control; Iron; Magnetic flux; Magnetic levitation; Magnetic materials; Rails; Superconducting magnets; Superconductivity;
Journal_Title :
Magnetics, IEEE Transactions on
