کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1818178 | 1525707 | 2014 | 5 صفحه PDF | دانلود رایگان |
• Thickness optimization of double-layer bulk HTSC arrangement is studied.
• The new bulk HTSC arrangement makes better use of the flux distribution of the magnetic rails.
• Levitation performance can be enhanced with the optimization.
• The optimization can meet large levitation force requirements for HTS Maglev system.
A double-layer high-temperature superconductor (HTSC) arrangement was proposed and proved to be able to bring improvements to both levitation force and guidance force compared with present single-layer HTSC arrangement. To fully exploit the applied magnetic field by a magnetic rail, the thickness dependence of a double-layer HTSC arrangement on the levitation performance was further investigated in the paper. In this study, the lower-layer bulk was polished step by step to different thicknesses, and the upper-layer bulk with constant thickness was directly superimposed on the lower-layer one. The levitation force and the force relaxation of the double-layer HTSC arrangement were measured above a Halbach magnetic rail. Experimental result shows that a bigger levitation force and a less levitation force decay could be achieved by optimizing the thickness of the lower-layer bulk HTSC. This thickness optimization method could be applied together with former reported double-layer HTSC arrangement method with aligned growth sector boundaries pattern. This series of study on the optimized combination method do bring a significant improvement on the levitation performance of present HTS maglev systems.
Journal: Physica C: Superconductivity - Volume 505, 15 October 2014, Pages 80–84