Energies (Oct 2024)

Investigation of a Magnetic Levitation Architecture with a Ferrite Core for Energy Harvesting

  • Igor Nazareno Soares,
  • Ruy Alberto Corrêa Altafim,
  • Ruy Alberto Pisani Altafim,
  • Melkzedekue de Moraes Alcântara Calabrese Moreira,
  • Felipe Schiavon Inocêncio de Sousa,
  • José A. Afonso,
  • João Paulo Carmo,
  • Rogério de Andrade Flauzino

DOI
https://doi.org/10.3390/en17215315
Journal volume & issue
Vol. 17, no. 21
p. 5315

Abstract

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This work presents the development of a magnetic levitation system with a ferrite core, designed for electromagnetic energy harvesting from mechanical vibrations. The system consists of a fixed enamel-coated copper coil and five neodymium-iron-boron permanent magnets housed within a PVC spool. To enhance magnetic flux concentration, a manganese-zinc ferrite (Mn-Zn) ring was employed within the spool. Experimental tests were conducted at frequencies up to 20 Hz, demonstrating the device’s potential for harvesting energy from small vibrations, such as those generated by human biomechanical movements, achieving operating voltages up to 3 V. Additionally, the architecture is scalable for larger systems and allows for the integration of multiple transducers without magnetic field interference, independent of the frequency or excitation phase of each transducer.

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