Effects of Dimensions in Added Ring-Shaped Magnet on Superconducting Levitation
| Autor: | Shunsuke Homma, Muneo Futamura |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Flux pinning
Materials science Stator Superconducting magnet Condensed Matter Physics 01 natural sciences Magnetic flux Electronic Optical and Magnetic Materials law.invention law Condensed Matter::Superconductivity Magnet 0103 physical sciences Levitation Restoring force Electrical and Electronic Engineering Composite material 010306 general physics Magnetic levitation |
| Zdroj: | IEEE Transactions on Applied Superconductivity. 31:1-4 |
| ISSN: | 2378-7074 1051-8223 |
| DOI: | 10.1109/tasc.2021.3064903 |
| Popis: | The flux pinning effect of bulk superconductors facilitates noncontact stable levitation of permanent magnets without any active control. In this study, a levitation system using a bulk superconductor was supplemented with a hybrid stator having a ring-shaped magnet in order to improve the stability of the superconducting levitation. Further, the effect of the size of the inner diameter of the ring-shaped magnet on the levitation stability was elucidated by measuring the levitation characteristics of a levitating magnet located above the hybrid stator to ring-shaped magnets with a variety of inner diameters. The vertical magnetic stiffness was improved only for 25-mm inner diameter, and the stiffness decreased if the diameter was larger or smaller than 25-mm. The horizontal magnetic stiffness decreased at the initial position, but the range expanded for which the restoring force acted. The results show that by the appropriate selection of the inner diameter of the ring-shaped magnet, the performance of the hybrid stator can be maximized. |
| Databáze: | OpenAIRE |
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