Numerical analysis of magnetic levitation forces for bulk superconductors with different superconducting junctions between multiple-seed-growth domains

2021 ◽  
Vol 34 (5) ◽  
pp. 055002
Author(s):  
Mitsuru Sawamura ◽  
Mitsuru Izumi
2013 ◽  
Vol 721 ◽  
pp. 278-281
Author(s):  
Jun Ma

t has been investigated that the interaction force in hybrid magnetic levitation systems with two GdBCO bulk superconductors and two permanent magnets system and a cubic permanent magnet (PM2) and a cubic permanent magnet (PM3) system in their coaxial configuration at liquid nitrogen temperature. The two single-domain GdBCO samples are of φ20mm and 10mm in thickness, the permanent magnet PM1 is of rectangular parallelepiped shape, the permanent magnets PM2 and PM3 are of cubic shape; the system placed on the middle of system and their coaxial configuration; It is found that the maximum levitation force decreases from 40.6N to 17.8N while the distance (Dpp) between the permanent magnets is increased from 0mm to 24mm and the distance (Dsp) between the two GdBCO bulk superconductors and a cubic permanent magnet PM3 is 0mm, The results indicate that the higher levitation force can be obtained by introducing PM-PM levitation system based on scientific and reasonable design of the hybrid magnetic levitation system, which is helpful for designing and constructing superconducting magnetic levitation systems.


2005 ◽  
Vol 19 (01n03) ◽  
pp. 403-405 ◽  
Author(s):  
XINGZHI WANG ◽  
SUYU WANG ◽  
JIASU WANG

A superconducting magnetic levitation system, with permanent magnet guideway and bulk superconductors, can realize a more advantageous system for transportation. The calculations of electromagnetic force characteristics are presented using finite element method analysis. The hysteretic behavior of the forces has been reproduced assuming a critical state model for the superconductor, and the results of the analysis are compared with the experimental data. Prom these results we have confirmed that the three-dimensional structure of magnetic field and the electromagnetic performance of superconductors strongly influence the characteristic of the electromagnetic force. Furthermore, a new hybrid superconducting magnetic levitation system has been designed to optimize the electromagnetic force.


Cryogenics ◽  
2016 ◽  
Vol 80 ◽  
pp. 108-114 ◽  
Author(s):  
B. Savaskan ◽  
E.T. Koparan ◽  
S.B. Güner ◽  
S. Celik ◽  
E. Yanmaz

2013 ◽  
Vol 493 ◽  
pp. 71-74 ◽  
Author(s):  
W.M. Yang ◽  
X.X. Chao ◽  
F.X. Guo ◽  
J.W. Li ◽  
S.L. Chen

2019 ◽  
Vol 14 (12) ◽  
pp. 1660-1663
Author(s):  
Sang Heon Lee ◽  
Jin Hyuck Kim

YBa2Cu3O7–y (YBaCuO) superconductors used in energy storage devices are superconducting permanent magnets in bulk form. YBaCuO bulk superconductors are fabricated by interior seeded melt growth. Because the seed crystal growth is based on a slow diffusion reaction, long-term heat treatment is required to fabricate a single crystal in order to improve the magnetic properties of the bulk YBaCuO superconductor. We fabricated a single-grain bulk YBaCuO superconductor by controlling the distance between the seed and the upper surface of the YBaCuO bulk. The magnetic levitation force and trapped magnetic field were measured for the YBaCuO superconducting bulk. The correlation between the superconducting magnetic properties of the specimens and the microstructure of each crystallographic plane were evaluated.


2019 ◽  
Vol 52 (36) ◽  
pp. 365001 ◽  
Author(s):  
Weifeng Zhang ◽  
Zigang Deng ◽  
Yong Zhang ◽  
Hongdi Wang ◽  
Jun Zheng ◽  
...  

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