Levitation force of multi-block YBaCuO bulk high temperature superconductors

2001 ◽  
Vol 11 (1) ◽  
pp. 1808-1811 ◽  
Author(s):  
S.Y. Wang ◽  
J.S. Wang ◽  
Z.Y. Ren ◽  
H. Jiang ◽  
M. Zhu ◽  
...  
Keyword(s):  
High Temperature ◽  
Levitation Force ◽  
High Temperature Superconductors ◽  
Ybacuo Bulk

EXPONENTIAL MODEL FOR LEVITATION FORCE OF YBa2Cu3O7-δ BULKS IN APPLIED FIELDS

2005 ◽  
Vol 19 (01n03) ◽  
pp. 395-397 ◽  
Author(s):  
HONGHAI SONG ◽  
ZHONGYOU REN ◽  
JUN ZHENG ◽  
XINGZHI WANG ◽  
SUYU WANG ◽  
...  
Keyword(s):  
High Temperature ◽  
Critical Current Density ◽  
Current Density ◽  
Applied Field ◽  
Levitation Force ◽  
High Temperature Superconductors ◽  
Exponential Model ◽  
Exponential Relationship ◽  
Bean Model ◽  
Applied Fields

The exponential model is proposed for levitation force calculations of high temperature superconductors in place of Bean model according to the Exponential relationship between the critical current density and applied field. The calculated results are larger than the experimental results in both symmetrical and unsymmetrical applied fields. The normalization curves agree well in the symmetrical applied field, however, they much differ in the unsymmetrical applied field.

Magnetization Method Design of Bulk Multi-Seeded High Temperature Superconductors

2013 ◽  
Vol 745-746 ◽  
pp. 185-190 ◽  
Author(s):  
Hai Lian Jing ◽  
Jun Zheng ◽  
Xing Lin Liao ◽  
Zi Gang Deng ◽  
Xin Chen ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Middle Domain ◽  
Trapped Flux ◽  
Melt Texture ◽  
Trapping Performance ◽  
The Magnetic Field ◽  
Ybacuo Bulk ◽  
Hts Magnet ◽  
Current Experimental Setup

The potential application of bulk high temperature superconductor (HTS) magnets has attracted much attention because of the potential high trapped flux in HTS magnets. This paper focuses on the magnetization method design of bulk multi-seeded HTS magnets for obtaining their better flux-trapping performance. Firstly, three different magnetization methods were carried out based on the current experimental setup to find a better way of magnetizing a bulk melt-texture three-seeded YBaCuO superconductor. The experimental results indicated that when the three domains of this three-seeded YBaCuO bulk were magnetized in order, the maximum trapped flux was higher than that when only one domain was magnetized. However, this method costs about three times of the magnetization time than the other two methods and the increasing ratio was only about 11.11%. It has been found that another method of magnetizing only the middle domain could also get a good result such as the uniformity of trapped flux is good. In order to improve the current experimental magnetization conditions for further improvement, two sheets of iron were designed to attach two poles of the electromagnet (Lakeshore, Model EM4-CV) for increasing the magnetizing area, and that all domains of a bulk multi-seeded HTS can be magnetized in one time. Firstly, the appropriate size and thickness of the iron sheets was simulated and optimized by Comsol Multiphysics. It has been found that the magnetic field between two poles was highest when the thickness of iron was 2 mm and the length was 68 mm. Then, the simulating and optimization results had been verified by the following experiments. According to the comparison experiments, it is proved that to choose the magnetization method that only magnetizing the middle domain with the improved setup is helpful to obtain larger and more homogeneous magnetic flux for the bulk multi-seeded HTS magnet due to the added iron sheets.

Experimental measurements of levitation force generated by high-temperature superconductors in magnetic field

2015 ◽  
pp. 255-260 ◽  
Author(s):  
Anna Sibilska-Mroziewicz ◽  
Edyta Ładyżyńska-Kozdraś ◽  
Krzysztof Falkowski ◽  
Krzysztof Wolski ◽  
Wojciech Credo ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Temperature ◽  
Levitation Force ◽  
High Temperature Superconductors ◽  
Experimental Measurements

Levitation force and magnetic stiffness in bulk high‐temperature superconductors

1990 ◽  
Vol 67 (9) ◽  
pp. 4358-4360 ◽  
Author(s):  
P.‐ Z. Chang ◽  
F. C. Moon ◽  
J. R. Hull ◽  
T. M. Mulcahy
Keyword(s):  
High Temperature ◽  
Levitation Force ◽  
High Temperature Superconductors ◽  
Magnetic Stiffness

Levitation force of a YBaCuO bulk high temperature superconductor over a NdFeB guideway

2001 ◽  
Vol 11 (1) ◽  
pp. 1801-1804 ◽  
Author(s):  
J.S. Wang ◽  
S.Y. Wang ◽  
Z.Y. Ren ◽  
M. Zhu ◽  
H. Jiang ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconductor ◽  
Levitation Force ◽  
Ndfeb Guideway ◽  
Ybacuo Bulk
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