A New HTS/PMG Maglev Design Using Halbach Array


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For the high temperature superconducting (HTS) magnetic levitation (Maglev) test vehicle in china, the present NdFeB PMG has the symmetrical magnetic field distribution on the upper and lower surface. However, the vehicle only utilizes its upper magnetic field. 50% PMG magnetic field energy goes to waste, so the onboard HTSC arrays haven’t reached the best levitation performance. In order to make the HTS/PMG maglev system more efficient and reasonable, a new HTS/PMG Maglev design has been proposed based on the present PMG and the Halbach array PMG, whose PMG is called as hybrid PMG. Firstly, three magnetic field distributions of three kinds of PMG are compared using FEM. It is found that the magnetic field distribution of the hybrid PMG is more efficient for the HTSC’s maglev. The concentrating upper surface magnetic field is stronger to improve the load capability of the system. Numerical analysis and experiment are close for the present HTS/PMG system. More calculation shows that the bulk YBaCuO HTSC with the hybrid PMG has significantly better levitation performance than that with the other two PMGs. The usage of the onboard HTSC arrays is improved much and the load capability of the HTS/PMG Maglev vehicle is upgraded with the hybrid PMG.



Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.




Z. G. Deng et al., "A New HTS/PMG Maglev Design Using Halbach Array", Materials Science Forum, Vols. 546-549, pp. 1941-1944, 2007

Online since:

May 2007




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10 20 30 40 50 60 70 80 -0. 9 -0. 8 -0. 7 -0. 6 -0. 5 -0. 4 -0. 3 -0. 2 -0. 1 0. 0 Bz (T) Gap (mm) PresentPMG HalbachPMG HybridPMG.

[10] 20 30 40 50 60 -5.

[5] [10] [15] [20] [25] [30] [35] [40] [45] [50] [55] Levitation Force (N) Gap (mm) Experiment results of present PMG Simulation results of present PMG Simulation results of halbach PMG Simulation results of hybrid PMG Fig. 4. The simulation Bz from 0 to -80mm at the center of the lower surface of three kinds of PMG. Fig. 5. Levitation force with different gap above three kinds of PMG and experiment results of the present PMG.

DOI: https://doi.org/10.1016/s0026-0657(08)70089-4