caa a22 4500 445383127 CHVBK 20180317143023.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s10948-011-1128-2 doi (NATIONALLICENCE)springer-10.1007/s10948-011-1128-2 Influence of AC External Magnetic Field on the Levitation Force Relaxation of HTS Bulk Above NdFeB Guideway [Elektronische Daten] [Minxian Liu, Yiyun Lu, Suyu Wang, Guangtong Ma] In the present High-Temperature Superconducting (HTS) maglev vehicle system, the air gaps between the adjacent permanent magnets make the magnetic fields above the NdFeB guideway non-uniform. So one is required to study the characteristics of levitation force of the HTS bulk influenced by non-uniform fields. In this paper, we have studied the characteristics of the levitation force relaxation by an experiment in which the AC external magnetic field generated by an electromagnet is used to simulate the time-varying external magnetic field caused by the inhomogeneity of the NdFeB guideway. From the experiment results, it is found that the levitation force is attenuated with the application of the AC external magnetic field, and the decay is increased with the amplitude of the AC magnetic field, but the decay is almost independent of the frequency of the AC magnetic field. Springer Science+Business Media, LLC, 2011 HTS bulk nationallicence Levitation force relaxation nationallicence AC magnetic field nationallicence NdFeB guideway nationallicence Liu Minxian School of Computer Science and Technology, Southwest University of Science and Technology, 621000, Sichuan, Mianyang, P.R. China aut Lu Yiyun Department of Electrical Engineering and Automation, Luoyang Institute of Science and Technology, 471023, Henan, Luoyang, P.R. China aut Wang Suyu Applied Superconductivity Laboratory, Southwest Jiaotong University, 610031, Sichuan, Chengdu, P.R. China aut Ma Guangtong Applied Superconductivity Laboratory, Southwest Jiaotong University, 610031, Sichuan, Chengdu, P.R. China aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1809-1813 1557-1939 24:5<1809 2011 24 10948 https://doi.org/10.1007/s10948-011-1128-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-011-1128-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Minxian School of Computer Science and Technology, Southwest University of Science and Technology, 621000, Sichuan, Mianyang, P.R. China aut NATIONALLICENCE 700 1- Lu Yiyun Department of Electrical Engineering and Automation, Luoyang Institute of Science and Technology, 471023, Henan, Luoyang, P.R. China aut NATIONALLICENCE 700 1- Wang Suyu Applied Superconductivity Laboratory, Southwest Jiaotong University, 610031, Sichuan, Chengdu, P.R. China aut NATIONALLICENCE 700 1- Ma Guangtong Applied Superconductivity Laboratory, Southwest Jiaotong University, 610031, Sichuan, Chengdu, P.R. China aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1809-1813 1557-1939 24:5<1809 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer