Magnetic Levitation Train

Abstract

Designing and constructing superconducting magnetic levitation (Maglev) trains using bulk superconductors and magnets is an exciting topic that can challenge science students. In a commercially available magnetic levitation train, a superconducting magnet and electromagnet are used to lift the train and move it on the rail. The superconducting magnets are arranged in the train body, and the electromagnets are installed on the rail. The repulsive force between the superconducting magnets and the electrical magnets lifts the train. This chapter explains how to make Maglev trains using permanent magnets and high-T_c bulk YBCO superconductors. Train rails are manufactured using rectangular Nd-B-Fe magnets, and melt-processed large grain YBCO superconductors (levitator) are placed within the Maglev train. A description is given of the method of combining the magnets with the same polarity that constitutes the elliptical rail, used in a demonstration of the Maglev trains. An explanation is also given of how to construct the Maglev train with superconductors, how to cool the superconductors to keep the train moving on the rails, and how to adjust the levitation height of the train above the rails.