Magnetic Resistance of HTS Maglev Moving Above a Permanent Magnet Guideway with Large Magnetic Field Fluctuations

2021 ◽  
Author(s):  
Jianjun Wei ◽  
Feinan Cai ◽  
Dajin Zhou ◽  
Lifeng Zhao ◽  
Cuihua Cheng ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Permanent Magnet Guideway ◽  
Large Magnetic Field ◽  
Field Fluctuations ◽  
Hts Maglev ◽  
Magnetic Resistance

Feasibility of low-cost magnetic rail designs by integrating ferrite magnets and NdFeB magnets for HTS Maglev systems

2015 ◽  
Vol 29 (25n26) ◽  
pp. 1542043 ◽  
Author(s):  
R. X. Sun ◽  
Z. G. Deng ◽  
Y. F. Gou ◽  
Y. J. Li ◽  
J. Zheng ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Magnetic Energy ◽  
Low Cost ◽  
Ndfeb Magnets ◽  
Energy Product ◽  
Element Simulation ◽  
Calculation Results ◽  
Hts Maglev ◽  
The Cost

Permanent magnet guideway (PMG) is an indispensable part of high temperature superconducting (HTS) Maglev systems. Present PMGs are made of NdFeB magnets with excellent performance and cost much. As another permanent magnet material, the ferrite magnet is weak at magnetic energy product and coercive force, but inexpensive. So, it is a possible way to integrate the ferrite and NdFeB magnets for cutting down the cost of present PMGs. In the paper, the equivalent on magnetic field intensity between ferrite magnets and NdFeB magnets was evaluated by finite element simulation. According to the calculation results, the magnetic field of the PMG integrating ferrite magnets and NdFeB magnets can be increased remarkably comparing with the pure ferrite PMG. It indicates that low-cost PMG designs by integrating the two permanent magnet materials are feasible for the practical HTS Maglev system.

Levitation Performance of Multiple YBaCuO Blocks with Different Arrays above a Permanent Magnet Guideway

2014 ◽  
Vol 787 ◽  
pp. 431-435 ◽  
Author(s):  
Da Bo He ◽  
Jun Zheng ◽  
Yan Feng Gou ◽  
Rui Xue Sun ◽  
Tong Che ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Levitation Force ◽  
High Temperature Superconductors ◽  
Utilization Rate ◽  
Permanent Magnet Guideway ◽  
Array Pattern ◽  
Maglev Vehicle ◽  
Levitation Performance ◽  
And Performance

Bulk high temperature superconductors are usually used as arrays due to the limited size and performance of a single bulk. To find a reasonable array pattern for the superconducting maglev vehicle, we studied the levitation force of four multi-seeded rectangular YBaCuO blocks with three possible arrays above a permanent magnet guideway (PMG). Experimental results show that the levitation force can be improved through an optimal array pattern of the bulk superconductor. The method is to avoid the joint gaps of bulk arrays in a strong magnetic field area of the PMG thus improving the utilization rate of the applied magnetic field. The optimal array pattern will be helpful to improve the levitation performance and reduce the quantity of onboard superconductors.

Levitation performance of different bulk YBaCuO arrays above a permanent magnet guideway for HTS maglev systems

2017 ◽  
Vol 705 ◽  
pp. 301-308 ◽  
Author(s):  
Shuaishuai Si ◽  
Jun Zheng ◽  
Botian Zheng ◽  
Yulei Zhang ◽  
Nan Qian ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Guideway ◽  
Levitation Performance ◽  
Hts Maglev
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