Abstract
With the development of rare earth permanent magnet (PM) materials, more and more attention has been paid to the permanent magnet electrodynamic suspension (PM-EDS) structure. In this paper, the plate-type PM-EDS structure with an adjustable deflection angle of PM is researched, and the size of the PM is optimized. First, the second-order vector potential (SOVP) equation is established, and the analytical solutions of the electromagnetic forces and magnetic fields of the PM-EDS structure are obtained by analytical calculation. Secondly, the accuracy and reliability of the analytical model are verified by comparing the analytical calculation results with the finite element analysis (FEA) calculation results. Finally, the multi-objective particle swarm optimization (MOPSO) algorithm is used to optimize the size of the PM. The optimization results prove that the lift-to-drag ratio and lift-to-weight ratio of the suspension system are improved. The research results can provide a theoretical basis for the design of a PM-EDS train.
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