Damping Characteristics of Magnetic Levitation using Bulk Superconductors and Permanent Magnets

This paper describes the damping characteristics of the magnetic levitation system using high-temperature superconducting bulks and permanent magnets. Numerical analysis using the combined
$A-V-\varphi$
and
$H$
method is performed to investigate the relationship among the superconducting properties, the structure of the levitation system, and the damping characteristics. A superconductor with a smaller critical current density may be used to improve the magnetic damping if the magnetic levitation force is sufficient. An additional electric conductor improves the magnetic damping characteristics. Based on the numerical analysis results, the relationship among them is quantitatively investigated.