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http://dx.doi.org/10.5370/JEET.2018.13.1.307

Analysis and Optimization of Permanent Magnet Dimensions in Electrodynamic Suspension Systems  

Hasanzadeh, Saeed (Electrical and Computer Engineering, Qom University of Technology)
Rezaei, Hossein (School of Electrical and Computer Engineering, University of Tehran)
Qiyassi, Ehsan (University of Massachusetts-Lowell)
Publication Information
Journal of Electrical Engineering and Technology / v.13, no.1, 2018 , pp. 307-314 More about this Journal
Abstract
In this paper, analytical modeling of lift and drag forces in permanent magnet electrodynamic suspension systems (PM EDSs) are presented. After studying the impacts of PM dimensions on the permanent magnetic field and developed lift force, it is indicated that there is an optimum PM length in a specified thickness for a maximum lift force. Therefore, the optimum PM length for achieving maximum lift force is obtained. Afterward, an objective design optimization is proposed to increase the lift force and to decrease the material cost of the system by using Genetic Algorithm. The results confirm that the required values of the lift force can be achieved; while, reducing the system material cost. Finite Element Analysis (FEA) and experimental tests are carried out to evaluate the effectiveness of the PM EDS system model and the proposed optimization method. Finally, a number of design guidelines are extracted.
Keywords
Permanent magnet; Suspension systems; Genetic algorithm; Finite element;
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