Energy Harvesting Based on Magnetic Dispersion for Three-Phase Power System

Tarcisio Oliveira de Moraes Júnior, Yuri Percy Molina Rodriguez, Ewerton Cleudson de Sousa Melo, Maraiza Prescila dos Santos, Cleonilson Protásio de Souza

Federal Institute of Paraíba - IFPB, Cajazeiras, Brazil Department of Electrical Engineering, Federal University of Paraíba - UFPB, Jo?o Pessoa, Brazil.

DOI: 10.4236/epe.2013.53B005                

Abstract

This paper presents a comparative study on Magnetic-Dispersion based Energy Harvesting Systems (MD-EHS) on electrical conductors that supply power for a three-phase AC motor. It introduces two MD-EHS which are based on magnetic cores of different material, named, nanocrystalline, ferrite and iron powder. The first one consists of harvesting energy from magnetic flux through three symmetrical magnetic cores installed on each power conductors of a three-phase AC motor. The second one consists of a single magnetic core for harvesting energy from magnetic flux of only one of these conductors. Both ones have an AC/DC converter and a variable resistor based load. Experimental results have agreed with the theoretical analysis and show that the first proposed MD-EHS is capable of supplying 14 times more energy than the second MD-EHS, considering nanocrystalline cores and phase current of 3 A, and 7.5 times more energy, considering ferrite cores and phase current of 9 A. Such energy can be applied to various low-power devices, especially in wireless sensor network.

Keywords

Energy Harvesting; Magnetic Dispersion; Magnetic Cores

Conflicts of Interest

The authors declare no conflicts of interest.

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