https://doi.org/10.1140/epjs/s11734-022-00498-6
Regular Article
Design study of a nonlinear electromagnetic converter using magnetic spring
Chair for Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Straße 70, 09126, Chemnitz, Germany
a
slim.naifar@etit.tu-chemnitz.de
Received:
25
July
2021
Accepted:
20
February
2022
Published online:
8
March
2022
In this paper, an experimental and theoretical study for designing a nonlinear electromagnetic converter-based magnetic spring is performed. The governing equation of the converter is investigated. A special focus is given to the magnetic force acting on the moving magnet in dependence of its volume and the geometry of the two fixed magnets, i.e., disc or ring. For the developed analytical and numerical model, the same converter volume has been used for all conducted investigations. Several parameters have been studied that can be used to tune the nonlinearity behavior. Further, the coil axial position was investigated analytically and experimentally. An energy harvesting prototype consisting of an oscillating cylindrical magnet levitated between two stationary magnets is fabricated and evaluated through experiments. The open-circuit voltage obtained through the analytical model has been compared to the experiment and solutions to tune the harvester resonant frequency while maintaining its output power density were proposed.
Copyright comment corrected publication 2022
© The Author(s) 2022. corrected publication 2022
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