Abstract
In order to improve stability of magnetic levitation using superconductors, a hybrid stator with two rectangular permanent magnets (additional magnets) added to the bottom of the superconducting stator was devised, and stability of the levitating magnet was evaluated from magnetic force and magnetic stiffness due to difference in dimensions and spacing of additional magnets and levitation height of the levitating magnet. Magnetic stiffness of the stator with additional magnets was improved compared to that of the conventional simple superconducting stator, and magnetic stiffness increased as width of additional magnets increased. Magnetic stiffness of the stator with additional magnets was also improved by lowering the levitation height of the levitating magnet. Magnetic stiffness was not improved when the distance between additional magnets was increased.
Published Version
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