System-level modelling and validation of a strain energy harvesting system by directly coupling finite element and electrical circuits
Li, Qiang; Kuang, Yang; Zhu, Meiling
Date: 2016
Conference paper
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Publisher DOI
Abstract
— There is a lack of system-level finite element (FE)
model which can directly predict the performance of a
piezoelectric energy harvester connected with interface circuits
and electric load. This work developed a system-level model of
piezoelectric strain energy harvesting system by directly coupling
the finite element and ...
— There is a lack of system-level finite element (FE)
model which can directly predict the performance of a
piezoelectric energy harvester connected with interface circuits
and electric load. This work developed a system-level model of
piezoelectric strain energy harvesting system by directly coupling
the finite element and electrical circuits. The strain energy
harvester (SEH) is a macro fibber composite adhesively bonded
to a composite beam. Simulations were performed with the SEH
connected with three circuits individually (i) a load resistor, (ii) a
rectifier terminated with a load resistor and (iii) a rectifier
terminated with a smoothing capacitor and a load resistor.
Experimental tests were carried out to validate the simulation
results. Good agreements were observed between the simulated
and measured results. The developed model is able to predict the
performance of the energy harvesting system when different
circuit was connected. The validated system-level model can be
used for the design and optimization of piezoelectric energy
harvesting system by investigating the interactions between
energy harvester and electrical circuits.
Engineering
Faculty of Environment, Science and Economy
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