Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
HARVESTING ELECTRICAL ENERGY FROM MECHANICAL VIBRATION BY PIEZOELECTRIC MATERIALS AND PERFORMANCE OPTIMIZATION
Download
Festus Ogunjinmi_Thesis.pdf.pdf
Date
2022-9-2
Author
Ogunjinmi, Festus
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
304
views
410
downloads
Cite This
The energy conversion performance of piezoelectric cantilever-beam energy harvesters (PCEH) is improved by developing and designing a novel. A rectangular hole is located in the middle of the metal substrate. Using the mathematical model of the PCEH, the mathematical expression of the following is derived as the eigenfrequency, displacement of the proof mass, and output voltage and power level achieved due to displacement of the cantilever carrying the piezoelectric material. We analyze the eigenfrequency and frequency domain of the model using NANOHUB to investigate the effects of frequency, load resistance, and acceleration on voltage and power. To further optimize the energy conversion of the piezoelectric using cantilever and boost converter an experimental verification was conducted. A novel PCEH has an optimal peak output power of 3451.55 μW and 5121 mV, at 0.01v diode voltage threshold of a rectifier circuit while the converter boost output yielded 15V from 5121 mV, which is 5 V input. Due to these advantages, the novel PCEH produces the output voltage and power at a higher level and a low frequency, as well as improved energy conversion efficiency.
Subject Keywords
Energy-conversion
,
Efficiency
,
Mathematical modelling
,
Piezoelectric
,
Cantilever-beam Energy harvesters (PCEH)
URI
https://hdl.handle.net/11511/101130
Collections
Northern Cyprus Campus, Thesis
Suggestions
OpenMETU
Core
Piezoelectric Cantilever Prototype for Energy Harvesting in Computing Applications
Beker, Levent; Külah, Haluk; Muhtaroglu, Ali (2011-12-02)
This paper presents a piezoelectric energy harvester (PEH) to convert vibrations to electrical power. A unimorph cantilever beam is used to generate voltage on piezoelectric material bonded close to the anchor of the cantilever beam. A 4.85 x 1 x 0.04 cm structural layer with piezoelectric material yields peak-to-peak voltage of 64 V at the resonance frequency of the structure. The empirically confirmed maximum power output is close to 0.5 mW. The results from validation data on the observed structure has b...
Optimization of AA-Battery Sized Electromagnetic Energy Harvesters: Reducing the Resonance Frequency Using a Non-Magnetic Inertial Mass
Yasar, Oguz; Ulusan, Hasan; Zorlu, Ozge; Sardan-Sukas, Ozlem; Külah, Haluk (2018-06-01)
This paper presents an optimization study for a miniature electromagnetic energy harvester, by incorporating a non-magnetic inertial mass (tungsten) along with the axially oriented moving magnets. The aim is to decrease the operation frequency and increase the output power of the harvester with the usage of higher density material and larger magnetic flux density. Dimensions of the magnets are optimized according to the harvester dimensions and magnetic flux gradients. Additionally, coil length, width, resi...
NUMERICAL INVESTIGATION OF BUBBLING FLUIDIZED BED TO BE USED AS THERMAL ENERGY STORAGE INTEGRATED TO HIGH-TEMPERATURE CONCENTRATED SOLAR POWER
HİÇDURMAZ, SERDAR; Tarı, İlker (Begell House, 2018-01-01)
A thermal energy storage unit designed to be used in a solid particle concentrated solar energy system is analyzed with the help of ANSYS Fluent 17.0. Hydrodynamics of the bubbling fluidized sand bed of 0.28 m × 1 m × 0.025 m dimensions to be used as a direct contact heat exchanger is modeled and validated. Geldart B-type particles with diameter of 275 micrometers and density of 2500 kg/m3 are used in modeling of bubbling fluidized sand bed. A Syamlal−O'Brien drag model with restitution coefficient of 0.99 ...
Energy Harvesting from Piezoelectric Stacks Using Impacting Beam
Ozpak, Yigit; Aykan, Murat; Çalışkan, Mehmet (2015-02-05)
Piezoelectric materials can be used for energy harvesting from ambient vibration due to their high power density and ease of application. Two basic methods, namely, tuning the natural frequency to the operational frequency and increasing the operation bandwidth of the harvester are commonly employed to maximize the energy harvested from piezoelectric materials. Majority of the studies performed in recent years focus mostly on tuning the natural frequency of the harvester. However, small deviations in operat...
Modeling electrical energy production in Northwestern Cyprus based on solar and wind measurements
Yenen, Mehmet; Fahrioğlu, Murat; Sustainable Environment and Energy Systems (2015-1)
This thesis presents the solar and wind energy assessment and aims to model the link between measurement and electrical energy production from wind and solar resources in Northwestern Cyprus. The measurement systems were installed and the measurements from these systems were analyzed thoroughly to meet the expectations of this thesis. Existing mathematical models were used to calculate electrical energy production figures for wind and solar energy. A circuit based Photovoltaic (PV) model from the literature...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
F. Ogunjinmi, “HARVESTING ELECTRICAL ENERGY FROM MECHANICAL VIBRATION BY PIEZOELECTRIC MATERIALS AND PERFORMANCE OPTIMIZATION,” M.S. - Master of Science, Middle East Technical University, 2022.