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Electromechanical processes during the start of induction-type magnetic levitation

V. F. Bolyukh · Electrical Engineering & Electromechanics · 2025

Purpose. A study of induction-type magnetic levitation by determining the electromechanical processes that occur when a stationary inductor is connected to an alternating voltage source and the levitation of an anchor made in the form of a multi-turn short-circuited winding with an attached load. Methodology. Using a mathematical model describing an inductor and an anchor with concentrated parameters, solutions are presented for equations describing the interconnected electrical, magnetic, mechanical and thermal processes that occur in induction-type magnetic levitation. Results. The influence of the frequency of the alternating current source on the electromechanical processes of levitation, which occur at different parameters of the anchor, is established. Due to the phase delay of the induced anchor current in relation to the inductor current, an electrodynamic force directed downwards arises at certain moments of their period. The total force acting on the anchor, due to the electrodynamic component, is of an alternating nature with a predominance of the positive, upwardly directed component, which causes pulsations of the anchor speed. Originality. The force acting on the anch

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