Numerical Analysis of Levitation Forces Dynamic Behavior in the HTS-magnet Levitation System
It is important to simulate the levitation force and its relaxation with time for the designers in the process of designing a HTS (high temperature superconductor)-magnet levitation bearing.In this paper,FEM (finite element method) based on HTSs critical-state model using H formulation was introduced.In the zero field condition,the process of magnetization of a cylindrical HTS bulk was simulated.The result showed that,current would be induced when HTS bulk was put in the external magnetic field,and the induced current tried to prevent the change of the magnetic field in the HTS bulk.When the external field disappeared,HTS bulk trapped some of the field and the bulk was magnetized.HTS-magnet levitation models were built in both the axisymmetric field and the plane field.Forces and their relaxations with time were calculated.In the HTS-magnet levitation system,force faded with time and faded slower as time went on.The force was bigger when the HTS bulk was put closer to the magnet and relaxed a little more.
Superconductor FEM H formulation Levitation force
Wenfeng Zhang Guomin Zhang Dong Xia Qingquan Qiu Zhiqiang Yu Lei Hu
Key Laboratory of Applied Superconduc-tivity&Institue of Electrical Engyneering, Chinese Academy of Key Laboratory of Applied Superconduc-tivity&Institue of Electrical Engyneering, Chinese Academy of
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
233-238
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）