Stability of the Maglev Vehicle Model Using Bulk High Tc Superconductors at Low Speed

Author

Zheng, Jun ; Deng, Zigang ; Wang, Lulin ; Liu, Lu ; Zhang, Ya ; Wang, Suyu ; Wang, Jiasu

Author_Institution

Southwest Jiaotong Univ., Chengdu

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2103

Lastpage

2106

Abstract

Based on the study of static properties of the high temperature superconducting (HTS) Maglev vehicle, the dynamic characteristics and stability are investigated in the paper. A Maglev vehicle model using 86 bulk high Tc superconductors (HTSCs) is made at 1/4 scale of the first man-loading HTS Maglev test vehicle. Dynamic characteristics of the low-speed HTS vehicle in three directions are studied by measuring vibration signals of six essential point of the vehicle model. The natural frequency is analysed. 30 mm height is suggested as a reasonable field cooling height (FCH). Lower FCH brings the operation stability of the HTS Maglev system over permanent magnetic guideway (PMG) at low speed. Dynamic stability dependence on the speed of the HTS vehicle is quite different from that of the conventional Maglev vehicle system. The effect of speed on the unsafe motions can be suppressed by decreasing FCH in the operation of the vehicle model over the PMG to a great extent.

Keywords

barium compounds; high-temperature superconductors; magnetic levitation; permanent magnets; superconducting magnets; vehicles; vibrations; yttrium compounds; Maglev vehicle model; YBa₂Cu₃O₇ - System; dynamic stability; field cooling height; high Tc superconductors; high temperature superconducting Maglev vehicle; natural frequency; operation stability; permanent magnetic guideway; vibration signals; Cooling; Frequency; High temperature superconductors; Magnetic analysis; Magnetic field measurement; Magnetic levitation; Stability; Testing; Vehicle dynamics; Vibration measurement; Bulk YBCO; Maglev; high-temperature superconductors; permanent magnetic guideway; stability;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.898388

Filename

4277843