Levitation Force Transition of High-Tc Superconducting Bulks in Varying External Magnetic Field

Author

Liu, Lu ; Wang, Jiasu ; Deng, Zigang ; Li, Jing ; Zheng, Jun ; Ma, Guangtong ; Wang, Suyu

Author_Institution

Appl. Supercond. Lab. (ASCLab), Chengdu, China

Volume

20

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

920

Lastpage

923

Abstract

In practical application of a High-Tc Superconducting (HTS) maglev vehicle, the onboard HTS bulks are inevitably exposed to a varying inhomogeneous field due to present processing and assembling technology of the permanent magnetic guideway (PMG). To explore the influence on the levitation forces of YBa₂Cu₃O_7-x bulk samples in such changing external magnetic field due to different traveling speeds, we experimentally investigated the general transition of said levitation force under such varying external field simulated by a spinning circular PMG. The force waves attenuated in accordance to the varying of the applied field dependent on the PMG´s rotating speed: attenuating when speeding up and rising slightly when speeding down. This observed phenomenon is of great importance in design and application of the HTS maglev system.

Keywords

high-temperature superconductors; magnetic levitation; mechanical guides; permanent magnets; rotation; HTS bulks; external magnetic field; high-Tc superconducting maglev vehicle; levitation force transition; permanent magnetic guideway; rotating speed; spinning circular PMG; Dynamic levitation force; energy loss; high temperature superconducting maglev; permanent magnetic guideway; thermal equilibrium;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2041645

Filename

5431036