Study And Analysis Of Piezo Bender For Energy Harvesting Application Using Matlab Simulink
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Date
2022-07-24
Authors
Kamar Shah, Noor Fajwa
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Piezoelectric energy harvesting (PEH) is a device used to convert vibration
energy or mechanical energy from the environment into electrical energy. PEH can be
presented in a few configurations or structures such as cantilever beam, cymbal, and
stack type. In this paper, the primary focus is to study and analysis PEH of bimorph
cantilever beam using MATLAB Simulink. A piezoelectric bimorph cantilever beam
configuration can be represented by a "Piezo bender" block model found in the
Simulink and MATLAB software packages. The electromechanical effect like output
power and voltage generated by a piezo bender with two separate vibration sources are
analysed and simulated within this particular research piece's scope. The vibrating
source of one variant has a constant frequency, while the source of the second variant
has an increasing frequency. The energy obtained from the vibration system is collected
by a piezo bender, which then transforms it into electrical energy. The collected energy
is used to power a continuous load and charge a storage battery. The findings indicate
that the output power of the piezo bender when utilising a constant frequency is more
excellent, coming in at 67.0288 mW, compared to the output power when increasing
the frequency, which is just 0.67493 mW. This is because a vibration source with a
constant frequency is far closer to the resonant frequency compared to non-constant
frequency. From these findings simulation results and studies, it might be used as a
reference to develop a PEH devices into reality.