Comparative study of conventional and magnetically coupled piezoelectric energy harvester to optimize output voltage and bandwidth

Ibrahim, Dauda Sh. and Abdul Muthalif, Asan Gani and Diyana, N. H. and Saleh, Tanveer (2017) Comparative study of conventional and magnetically coupled piezoelectric energy harvester to optimize output voltage and bandwidth. Microsystem Technologies, 23 (7). pp. 2663-2674. ISSN 0946-7076 E-ISSN 1432-1858

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Abstract

Energy harvesting has experienced significant attention from researchers globally. This is due to the quest to power remote sensors and portable devices with power requirements of tens to hundreds of μW. Hence, ambient vibration energy has the potential to provide such power demands. Thus, cantilever beams with piezoelectric materials have been utilized to transduce mechanical energy in vibrating bodies to electrical energy. However, the challenge is to develop energy harvesters that can harvest sufficient amount of energy needed to power wireless sensor nodes at wide frequency bandwidth. In this article, piezo- electric energy harvester (PEH) beams with coupled mag- nets are proposed to address this issue. With macro fiber composite as the piezoelectric transducer, mathematical models of different system configurations having magnetic couplings are derived based on the continuum based model. Simulations of the system dynamics are done using numerical integration technique in MATLAB software to study the influence of magnetic interactions in generating power and frequency bandwidth due to base excitations at low frequency range. Experimental results comparing conventional system and the proposed piezoelectric beam configurations with coupled magnets are also presented. Finally, the optimal beam separation distance between the magnetic oscillator and PEH is presented in this work.

Item Type:	Article (Journal)
Additional Information:	3352/53927
Uncontrolled Keywords:	Bandwidth; Energy harvesting; Magnetism; Magnets; MATLABP; piezoelectric devices; Piezoelectricity; Remote sensing; Sensor nodes
Subjects:	T Technology > TJ Mechanical engineering and machinery
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechatronics Engineering
Depositing User:	Ir. Ts. Dr Asan Gani Abdul Muthalif
Date Deposited:	10 Jan 2017 10:46
Last Modified:	17 Apr 2018 09:40
URI:	http://irep.iium.edu.my/id/eprint/53927

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