Reducing the Power Consumption of the Electrodynamic Suspension Levitation System by Changing the Span of the Horizontal Magnet in the Halbach Array

Abstract

In high-speed magnetic railways, it is necessary to create the forces that lift the train. This effect is achieved by using active (EMS) or passive (EDS) magnetic systems. In a passive system, suspension systems with permanent magnets arranged in a Halbach array can be used. In this paper, an original Halbach array with various alternately arranged horizontally and vertically magnetized magnets is proposed. Correctly selected geometry allows us to obtain higher values of levitation forces and lower braking forces in relation to a system with identical horizontally and vertically magnetized elements. The effect of such a shape of the magnetic arrangement is the reduction of instantaneous power consumption while traveling due to the occurrence of lower braking forces. In order to perform a comparative analysis of the various geometries of the Halbach array, a simulation model was developed in the ANSYS Maxwell program. The performed calculations made it possible to determine the optimal dimensions of horizontally and vertically magnetized elements. The results of calculations of instantaneous power savings for various cruising speeds are also included.

Multi-objective optimization design of novel differential permanent magnet spring based on analytical modeling

“…To obtain the largest bearing capacity, Lee et al 40 proposed a topology optimization method for permanent magnet patterns in Halbach arrays by using isoparametric projection, which has been successfully applied to the design of cylindrical Halbach arrays. Kublin et al 41 designed Halbach arrays with different fill factor of the horizontal magnet, which obtains the higher values of levitation forces. Besides, several studies have been carried out on Halbach structures such as trapezoidal arrays, 42 double-layer arrays, 43 and right triangular arrays.…”