Publication: New simulation approach for tuneable trapezoidal and rectangular piezoelectric bimorph energy harvesters
No Thumbnail Available
Date
2017
Authors
Salim M.
Salleh H.
Loh E.W.K.
Khir M.
Salim D.
Journal Title
Journal ISSN
Volume Title
Publisher
Springer Verlag
Abstract
Enhancing and optimizing the power and operating frequency range of energy harvesters (EH) are important objectives in designing an energy harvester generator. The application of trapezoidal shaped piezoelectric (PZT) cantilever is one way of increasing the harvested power of energy harvesters. Finite element software was used to simulate a tuneable trapezoidal and a rectangular PZT bimorph cantilevers with similar specifications. From the new simulation approach, an open circuit voltage obtained for different resonance frequencies for both generators. The simulation results are compared with the experimental and found to be in good agreement. The results have showed an increase in power over 19�% for the trapezoidal generator over the rectangular generator for a frequency range of 38�122�Hz. The trapezoidal harvester produced maximum power of 0.272�mW at resonance frequency of 34�Hz and acceleration of 2.5�m/s2. � 2016, Springer-Verlag Berlin Heidelberg.
Description
Energy harvesting; Nanocantilevers; Natural frequencies; Open circuit voltage; Piezoelectricity; Resonance; Bimorph cantilever; Energy Harvester; Finite element software; Frequency ranges; Operating frequency; Piezoelectric bimorphs; Resonance frequencies; Simulation approach; Finite element method