Calculation and Analysis of the Forces Created by Halbach Permanent-Magnet Electrodynamic Suspension
This paper researches on the levitation and drag forces of Halbach permanent-magnet electrodynamic suspension. First, construct an analytical model to calculate the magnetic field in the air gap and the current in the secondary conductor plate, thus deducing analytical expressions of the levitation and drag forces. Second, establish a 2D and a 3D finite element model, using ANSYS. Finally, at different speeds, from 0 to 250 km/h, compare the forces calculating results through the above three methods. Results generating from the 2D-FEM and the analytical algorithm have less than 3% of relative error, but for having not taken the horizontal components of eddy current in the reaction plate into consideration, thus 10% more than the 3D-FEM calculating results.
Y. Chen and K. L. Zhang, "Calculation and Analysis of the Forces Created by Halbach Permanent-Magnet Electrodynamic Suspension", Applied Mechanics and Materials, Vols. 229-231, pp. 440-443, 2012