Design of Piezoelectric Energy Harvester Single Cantilever Beam for IoT applications and Micro-electronic devices
A few years back the power requirement of electronic devices was very high. But with the technological developments in the field of internet-based systems, the design of low-powered microelectronic devices, WSN and IoT devices became necessary. In these systems the size and the power requirement a...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | en |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2025
|
| Online Access: | http://journalarticle.ukm.my/26790/1/36.pdf http://journalarticle.ukm.my/26790/ https://www.ukm.my/jkukm/volume-3701-2025/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | A few years back the power requirement of electronic devices was very high. But with the technological developments
in the field of internet-based systems, the design of low-powered microelectronic devices, WSN and IoT devices
became necessary. In these systems the size and the power requirement are low and in most situations the replacement
of batteries is challenging. For these microelectronic and IoT devices the abundant energy harvester is very useful.
Among different abundant energy resources, vibrational energy harvesting with piezoelectric cantilever beam energy
harvesters is of interest. This research work presents the design and analysis of an energy harvester (EH) which
contains a single piezoelectric cantilever beam that captures the vibrational energy of the suspension bridge. This
approach ties the two things together by framing piezoelectric energy harvesting as a solution to the power challenges
faced by low-powered devices, making the transition feel more natural and connected. The main challenge in the
design was matching the resonance frequency of the bridge with a piezo EH which is around 2.5Hz to extract
maximum power. To overcome this problem Eigen frequency analysis in COMSOL Multiphysics is done. The 3D
geometry of single beam piezo EH is designed and analyzed in COMSOL Multiphysics solid works. In this research
work a relationship is established between the geometrical parameters of the single beam piezo EH and Eigen
frequency based on the first six Eigen frequency analyses in COMSOL Multiphysics. For fi nite element analysis
(FEA) a piezo single beam harvester is vibrated by application of force which is equal to the vibrational force (0.98m/
s2) in the suspension bridge. The force of (0.98 m/s²) is chosen because it avoids resonating with critical system
components. The output from the harvester is achieved at a resonance frequency of 2.5Hz. The output from the piezo
is very low 800 milli volts at 2.5Hz. The output results of piezo EH are also compared with a cantilever beam with a
single-branch structure. |
|---|