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Electromagnetic forces in magnetic actuator – FEM calculation boundary value problems with superconductivity

The aim of this work is the dynamic calculation of the necessary electromagnetic forces of the active magnetic suspension system for positioning of the vehicle clearance at different mass loads. Numerical calculations of magnetic fields and obtained forces are based on finite element method. In order to improve the design of the actuator, are been experimented with magnetic materials that are used for dynamic response to a disturbance force, which led to the use of superconducting materials as ideal diamagnetic materials. Comprehensive solutions have been applied to the development of a parametric modelling. The paper defines the basic model for further modelling and the possibility to observe the behaviour of a given model using different types of materials and loads. Types of magnetic materials and their selection for particular parts of the model are explained. These results provide insight into the magnetic field, dependence of default coil current and power of the levitate part of the model. Using these results a mathematical model can be developed. State space model calculation can be utilized as a preparation for automatic regulation of the dynamics of the suspension.

electromagnetic forces; levitation; superconductors; numerical calculation; precalculated mathematical model; vehicles suspension

Acta Polytechnica Hungarica, Óbuda University, Kandó Kálmán Faculty of Electrical Engineering