Experimental validation of field cooling simulations for linear superconducting magnetic bearings

Abstract

For practical stability of a superconducting magnetic bearing the refrigeration process must occur with the superconductor in the presence of the magnetic field (a field cooling (FC) process). This paper presents an experimental validation of a method for simulating this system in the FC case. Measured and simulated results for a vertical force between a high temperature superconductor and a permanent magnet rail are compared. The main purpose of this work is to consolidate a simulation tool that can help in future projects on superconducting magnetic bearings for MagLev vehicles.

H-formulation for simulating levitation forces acting on HTS bulks and stacks of 2G coated conductors

“…The finite element method (FEM) is the most used tool in the simulation of HTSs, allowing the use of different formulations: A−V [7,8], T w -(or T f -) [9], E [10], and H [11][12][13]. A quite detailed review of the various numerical techniques used in the simulation of levitation forces can be found in [14].…”

Maglev-cobra: an urban transportation system For highly populated cityes

“…Brazil, with the MagLev-Cobra project developed a real-scale demonstration line of this technology. The physical aspects of this project were already addressed in some publications [10]- [16]. Other research groups are also pursuing this technology [17], [18].…”

3-D Finite-Element Modelling of a Maglev System using Bulk High-Tc Superconductor and its Application

“…In this aspect, a lot of previous work has been reported and the dependence of the levitation force/guidance force on the parametes of the magnetic rail has been invesigated. However, all of these results were concluded from the numerical data calculated by a 2-D model that can just fit the experimental results in quality but fails in quantity with a reasonable value of critical current density (Song, et al, 2006;Dias, et al, 2010). Compared with the previous work, the merit of the present calculation is that, the computed levitation force/guidance force is comparable to the real system with reasonable vaule of the critical current density and thus, the computed results can be used to conduct the practical design directly.…”