TITLE:
Energy Harvesting Based on Magnetic Dispersion for Three-Phase Power System
AUTHORS:
Tarcisio Oliveira de Moraes Júnior, Yuri Percy Molina Rodriguez, Ewerton Cleudson de Sousa Melo, Maraiza Prescila dos Santos, Cleonilson Protásio de Souza
KEYWORDS:
Energy Harvesting; Magnetic Dispersion; Magnetic Cores
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.3B,
July
31,
2013
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.