Levitation Performance Study of Bulk HTSC over Monopole PMG Consider Different Cross-Section Configuration with 3D-Modeling Numerical Method

• Published in: Journal of low temperature physics Vol. 173; no. 1-2; pp. 45 - 53
• Main Authors: Lu, Yiyun, Dang, Qiaohong, Liu, Minxian
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.10.2013
• Subjects: Characterization and Evaluation of Materials; Computer simulation; Condensed Matter Physics; Magnetic Materials; Magnetism; Physics; Physics and Astronomy; Bulk high temperature superconductor; Finite element method (FEM); Magnetic levitation force; 3D-modeling; Permanent magnetic guideway
• ISSN: 0022-2291; 1573-7357
• DOI: 10.1007/s10909-013-0875-9

Magnetic levitation force of bulk high temperature superconductors (HTSCs) above monopole permanent magnet guideway (PMG) is simulated using finite element method (FEM). The models are formulated by H-formulation and resolving codes is developed using Finite Element Program Generator (FEPG). The E – J power law is used to describe the electrical field vs. current density nonlinear characteristic of HTSC. By the method, the levitation performance is studied consider different cross-section configure of the monopole PMG. The simulation results show that the maximum levitation force (MLF) of the bulk HTSC will increase when the height/width of the PMG rises while fixing the width/height of the monopole PMG cross-section. The increasing trends to slow when the absolute differential value of the height and the width of the PMG cross-section become larger and larger. For a certain cross-section area of the monopole PMG, the economical levitation cost may be achieved while the ratio of height to width of the cross-section changes between 0.475 and 0.525.