A Dual-Output Magnetoelectric Energy Harvester in Ferrite/Piezoelectric Toroidal Magnetoelectric Composites

A dual-output magnetoelectric (ME) energy harvester consisting of strictly concentric toroidal Ni
_0.8
Zn
_0.2
Tb
_0.02
Fe
_1.98
O
₄
/(Pb
_0.70
Ba
_0.26
Sr
_0.04
)(Zr
_0.52
Ti
_0.48
)O
₃
(PbaS-4)/Ni
_0.8
Zn
_0.2
Tb
_0.02
Fe
_1.98
O
₄
composite with solenoid wound around it is presented and developed. In this case, spatial electromagnetic energy from power lines can be scavenged by ME element and the solenoid simultaneously, and then, the output power density was improved due to electromagnetic induction involved. Experimental results show that the maximum induced voltage can reach 15 mV (port I) and 1.2 mV (port II) for open-circuit conditions under the amplitude of 70 mA current driving of 50 Hz. Correspondingly, generated output power for ports I and II reaches 0.4285 and 30.1476 nW at optimum load resistances of 250 and
$140~\Omega $
, respectively. Through these study results, new research paths to move forward with enhanced flexibility for device design of magnetic energy harvester in application in power line autonomous monitoring systems. Through these study results, new research paths to move forward with enhanced flexibility for device design of magnetic energy harvester were achieved in application of power line autonomous monitoring systems.