Magnetic levitation and guidance performance of Y–Ba–Cu–O and Gd–Ba–Cu–O bulk superconductors under low ambient pressure

2019 ◽  
Vol 52 (36) ◽  
pp. 365001 ◽  
Author(s):  
Weifeng Zhang ◽  
Zigang Deng ◽  
Yong Zhang ◽  
Hongdi Wang ◽  
Jun Zheng ◽  
...  
Keyword(s):  
Magnetic Levitation ◽  
Ambient Pressure ◽  
Bulk Superconductors

The Effect of the Distance between the Permanent Magnets on the Levitation Force in Hybrid Magnetic Levitation System

2013 ◽  
Vol 721 ◽  
pp. 278-281
Author(s):  
Jun Ma
Keyword(s):  
Permanent Magnet ◽  
Liquid Nitrogen ◽  
Permanent Magnets ◽  
Magnetic Levitation ◽  
Levitation Force ◽  
Liquid Nitrogen Temperature ◽  
Interaction Force ◽  
Bulk Superconductors ◽  
Levitation System ◽  
Magnetic Levitation System

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.

FEM ANALYSIS OF A NEW HYBRID SUPERCONDUCTING MAGNETIC LEVITATION SYSTEM

2005 ◽  
Vol 19 (01n03) ◽  
pp. 403-405 ◽  
Author(s):  
XINGZHI WANG ◽  
SUYU WANG ◽  
JIASU WANG
Keyword(s):  
Electromagnetic Force ◽  
Magnetic Levitation ◽  
Three Dimensional ◽  
Fem Analysis ◽  
Hysteretic Behavior ◽  
Dimensional Structure ◽  
Bulk Superconductors ◽  
Levitation System ◽  
Magnetic Levitation System ◽  
Method Analysis

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.

The size effect on the magnetic levitation force of MgB 2 bulk superconductors

Cryogenics ◽  
2016 ◽  
Vol 80 ◽  
pp. 108-114 ◽  
Author(s):  
B. Savaskan ◽  
E.T. Koparan ◽  
S.B. Güner ◽  
S. Celik ◽  
E. Yanmaz
Keyword(s):  
Size Effect ◽  
Magnetic Levitation ◽  
Levitation Force ◽  
Bulk Superconductors ◽  
Magnetic Levitation Force

Magnetic levitation and its application for education devices based on YBCO bulk superconductors

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

Magnetic Properties of YBaCuO Superconductors Fabricated Using Melt Growth

2019 ◽  
Vol 14 (12) ◽  
pp. 1660-1663
Author(s):  
Sang Heon Lee ◽  
Jin Hyuck Kim
Keyword(s):  
Magnetic Properties ◽  
Permanent Magnets ◽  
Magnetic Levitation ◽  
Diffusion Reaction ◽  
Energy Storage Devices ◽  
Melt Growth ◽  
Storage Devices ◽  
Bulk Superconductors ◽  
Grain Bulk ◽  
Ybacuo Bulk

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.

Bulk superconductors textured and densified by Spark Plasma Sintering

2015 ◽  
Vol 1807 ◽  
pp. 7-10 ◽  
Author(s):  
J. G. Noudem ◽  
L. Dupont ◽  
P. Bernstein
Keyword(s):  
Spark Plasma Sintering ◽  
Crystallographic Orientation ◽  
Magnetic Levitation ◽  
Bulk Material ◽  
Field Measurements ◽  
Force Measurements ◽  
Bulk Superconductors ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
The One

ABSTRACTIn this contribution, we report progress in the preparation of superconducting materials made by Spark Plasma Sintering (SPS). On the one hand, the fabrication process was optimized in order to improve the texturing of Bi2Ca2Sr2CuO8 superconductor ceramics. The new process is referred to as “Spark Plasma Texturing” (SPT). During SPT, the bulk material is free to deform itself. As a result, an inter-grain preferential crystallographic orientation is generated, while materials processed by conventional SPS are usually quasi-isotropic. The crystallographic orientation causes a strong anisotropy in the magnetic properties of the Bi2Ca2Sr2CuO8 bulk.On the other hand, superconducting MgB2 discs were consolidated using the rapid SPS process. MgB2 has not been yet been seriously considered as a superconductor that could be used for magnetic levitation. Here we present trapped field measurements as a function of the distance to the superconductor and field cooled levitation force measurements that suggests that it presents interesting characteristics for this application.

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