A comparative numerical study of repulsive forces for stabilizing
a rectangular aluminum plate between ac induction type and ac ampere type
magnetic levitation methods
Issue title: Proceedings from the 16th International
Symposium on Applied Electromagnetics and Mechanics (ISEM 2013)
Guest editors: Xavier Maldague and Toshiyuki Takagi
Affiliations: [a] Department of Environmental and Energy Sciences Field,
Graduate School of Science and Engineering for Research, University of Toyama,
Toyama, Japan | [b] Graduate School of Science and Engineering for
Education, University of Toyama, Toyama, Japan | Université Laval, Canada | Tohoku University, Japan
Correspondence:
[*]
Corresponding author: Takahisa Ohji, Department of Environmental
and Energy Sciences Field, Graduate School of Science and Engineering for
Research, University of Toyama, 3190 Gofuku 930-8555, Toyama, Japan. E-mail:
ohji@eng.u-toyama.ac.jp
Abstract: This paper deals with the comparative numerical study of repulsive
forces acting on a rectangular aluminum plate by using two methods of magnetic
levitation (maglev) – conventional ac induction type maglev and ac ampere
type maglev proposed by the authors. We made up three-dimensional finite
element models for these maglev methods and evaluated calculated repulsive
forces in each axis of orthogonal coordinates. As a result, we achieved
computer-aided visualization of eddy current in a levitated aluminum plate and
magnetic flux around the plate. In addition, we found that the stability in the
guidance direction is fully maintained in both methods, and the repelling force
of ac ampere type maglev in the conveyance direction decrease compared to that
of ac induction type maglev.
Keywords: Magnetic levitation, ac ampere type, ac induction type, eddy current, finite element analysis
