4.5 Article

Modification of Electromechanical Coupling in Electromagnetic Harvester

Journal

ENERGIES
Volume 15, Issue 11, Pages -

Publisher

MDPI
DOI: 10.3390/en15114007

Keywords

energy harvesting; electromechanical coupling; magnetic levitation

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Funding

  1. National Science Centre, Poland [DEC-2019/35/B/ST8/01068]

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This paper focuses on the electromechanical coupling in a magnetic levitation energy harvester and proposes a coil design to modify the coupling. Experimental results show that the proper configuration of the coil can increase energy collection and broaden the resonance operating bandwidth.
This paper focuses on the modelling and analysis of electromechanical coupling in a magnetic levitation energy harvester. A prototype harvester is built and its performance is tested with a shaker under resonance conditions. In order to modify the electromechanical coupling, a specially designed coil stack consisting of four independent coils is proposed. The configuration of the coil and the gap between them change the shape of the electromechanical coupling function. The results obtained show that the proper configuration of the modular coil allows one to modify the shape of the electromechanical coupling, increasing the recovered energy, and widens the resonance operating bandwidth.

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