Fundamental Characteristics and 3D Electromagnetic Analysis for Magnetic Levitation Transporter using YBCO Bulk Superconductors

Abstract

We have been developing a magnetic levitating device with two-dimensional movement, namely a 'levitating X-Y transporter'. For a real design of the levitating X-Y transporter, it is necessary to clarify the levitation characteristics, such as lift, levitation height and stability against mechanical disturbances. In this paper, we examine the lift and the restoring force experimentally and newly developed a simulation code based on the three-dimensional hybrid finite and boundary element method to analyze the dynamic electromagnetic behaviors of YBCO bulk. We investigated the suitable permanent-magnet arrangement to enhance the levitation characteristics through experiments and numerical simulation. And we also performed the design of a levitating transporter which can levitate a load of 200 kg with a gap of 16 mm.

Interaction of bulk superconductors with flywheel rings made of multiple permanent magnets

“…Based on the repulsive force measurements, the average repulsive force at the gap of 15 mm was 13.47 N, which gives the force density of 0.48 N/cm 2 . Thus the present flywheel system can bear the total mass of 161 kg at 15 mm gap, although this value also depends on the initial field-cooling gap, in that the force density will be increased by increasing the initial gap [12]. In addition, the total mass that the flywheel system can bear will also be raised by increasing the radius of flywheel magnet; e.g.…”