期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 420, 期 -, 页码 171-176出版社
ELSEVIER
DOI: 10.1016/j.jmmm.2016.07.033
关键词
Permanent magnet guideway; High temperature superconductors; Levitation force; Dynamic characteristics
资金
- National Natural Science Foundation in China [51307147, 51375404]
- Fundamental Research Funds for the Central Universities
- State Key Laboratory of Traction Power at Southwest Jiaotong University [2016TPL_T01, 2016TPL_T09]
The permanent magnet guideway (PMG) is an important part of high temperature superconducting (HTS) maglev systems. So far, two types of PMG, the normal PMG and Halbach-type PMG, are widely applied in present maglev transportation systems. In this paper, the levitation performance of high temperature superconductor bulks above the two PMGs was synthetically compared. Both static levitation performance and dynamic response characteristics were investigated. Benefiting from the reasonable magnetic field distribution, the Halbach-type PMG is able to gain larger levitation force, greater levitation force decay during the same relaxation time, bigger resonance frequency and dynamic stiffness for the bulk superconductor levitation unit compared with the normal PMG. Another finding is that the Halbach-type PMG is not sensitive to the levitation performance of the bulk levitation unit with different arrays. These results are helpful for the practical application of HTS maglev systems. (C) 2016 Elsevier B.V. All rights reserved.
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