scholarly journals Design, Modeling, and Simulation of Two-Piece Trapezoidal Piezoelectric Devices for Sensing and Energy Harvesting

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Nan Chen ◽  
Vishwas Bedekar
Keyword(s):  
Electric Power ◽  
Full Width Half Maximum ◽  
Energy Harvester ◽  
Resistive Load ◽  
Electric Power Output ◽  
Piezoelectric Energy ◽  
Polycrystalline Ceramic ◽  
Series Configuration ◽  
Piezoelectric Devices ◽  
Polycrystalline Ceramic Material

The objective of the research is to design a high power energy harvester device through a two-piece trapezoidal geometry approach. The performance of the composite two-piece trapezoidal piezoelectric PZT-PZN polycrystalline ceramic material is simulated using COMSOL Multiphysics. Results are analysed using the series configuration of a two-piece trapezoidal composite bimorph cantilever which vibrates at the first fundamental frequency. The two-piece trapezoidal composite beam designs resulted in a full-width half-maximum electric power bandwidth of 2.5 Hz while providing an electric power density of 16.81 mW/cm3 with a resistive load of 0.08 MΩ. The authors believe that these results could help design a piezoelectric energy harvester to provide local energy source which provides high electric power output.

MICRO-PLATE PIEZOELECTRIC ENERGY HARVESTER FOR PULSATING ARTERIAL PRESSURE

2016 ◽  
Vol 16 (05) ◽  
pp. 1650073 ◽  
Author(s):  
P. R. NWAGOUM TUWA ◽  
P. WOAFO
Keyword(s):  
Arterial Pressure ◽  
Electric Power ◽  
Axial Load ◽  
Energy Harvester ◽  
Theoretical Study ◽  
Dynamical Behavior ◽  
Electrical Energy ◽  
Load Resistance ◽  
Electric Power Output ◽  
Piezoelectric Energy

This work considers a theoretical study for the conversion of the pulsating arterial pressure into electrical energy using piezoelectric layer on a micro-plate with axial load. The mathematical modeling of the device is carried out. Analytical and numerical methods are used to analyze the dynamical behavior of the plate and the variation of the electric power output. Pulsatile voltage is obtained with electric power of the order of 3.07[Formula: see text]nW for a plate of [Formula: see text][Formula: see text]cm3. The power increases with the pressure frequency and attains its maximal value for a load resistance of about 5[Formula: see text]k[Formula: see text].

scholarly journals Modeling, Simulation and Optimization of Piezoelectric Bimorph Transducer for Broadband Vibration Energy Harvesting in Multi-Beam and Trapezoidal Approach

2018 ◽  
Vol 7 (2) ◽  
pp. 26 ◽  
Author(s):  
Nan Chen ◽  
Vishwas Bedekar
Keyword(s):  
Power Density ◽  
Energy Harvester ◽  
Vibration Energy Harvesting ◽  
Simulation And Optimization ◽  
Energy Harvesters ◽  
Trapezoidal Shape ◽  
Beam Design ◽  
Polycrystalline Ceramic ◽  
Series Configuration ◽  
Polycrystalline Ceramic Material

The objective of the research is to design a broadband energy harvester device through the multi-beam approach and non-linear trapezoidal geometry approach. The performance of the composite piezoelectric PZT-PZN polycrystalline ceramic material is simulated using COMSOL Multiphysics, and results are compared using series configuration of a composite bimorph energy harvester which vibrates at its 1st fundamental frequency. We chose a five cantilever multibeam harvester to demonstrate that individual fundamental modes of the beams can achieve a broader frequency band and generate power. Authors also show that composite trapezoidal beam design leads to high power density broadband frequency response. The multibeam approach resulted in broader bandwidth of 18 Hz while generating a power density of 0.0913 mW/cm3 whereas the trapezoidal shape generated 2.3 – 2.5 mW/cm3 with a bandwidth of 4 to 6 Hz. Authors believe that these results could help design broadband energy harvesters to enhance power density as well as bandwidth.

Finite Element Modeling and Experimental Studies of Stack-Type Piezoelectric Energy Harvester

2017 ◽  
Vol 09 (06) ◽  
pp. 1750084 ◽  
Author(s):  
L. V. Duong ◽  
M. T. Pham ◽  
V. A. Chebanenko ◽  
A. N. Solovyev ◽  
Chuong V. Nguyen
Keyword(s):  
Finite Element ◽  
Output Voltage ◽  
Energy Harvester ◽  
Numerical Models ◽  
Experimental Studies ◽  
Fe Model ◽  
Resistive Load ◽  
Piezoelectric Energy ◽  
Load Rate ◽  
1D Model

In this paper, closed-form coupled electromechanical one-dimensional (1D) model and finite element (FE) model for stack-type piezoelectric energy harvester (PEH) and delivery to a resistive load available in the literature were proposed. We obtained the values of some parameters of 1D model and set the boundaries of its applicability based on the comparison of the resonance frequency and output voltage between the FE model and 1D model. The numerical modeling results of the full-scale experiment with low-frequency pulse excitation of the stack-type PEH for the energy storage device are described. PEH is a multilayer axisymmetric piezoceramic package. The dependence between the output voltage and the current load rate under the harmonic and non-stationary mechanical action of the PEH is studied. The experimental results-to-numerical calculation correlation has shown their good coincidence, which allows using the analyzed numerical models to optimize the PEH design at the given external action frequency and the active resistance value of the external electric circuit. Besides, it found that the frequency dependence of the output voltage of the stack-type PEH is of a complex nature depending both on the compressive pulse loading level and the piezoelectric modulus value of the PEH sensitive element, and on the electrical load resistance.

Piezoelectric Vibration Energy Harvesting From a Two-Dimensional Coupled Acoustic-Structure System With a Dynamic Magnifier

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
A. Aladwani ◽  
O. Aldraihem ◽  
A. Baz
Keyword(s):  
Energy Harvesting ◽  
Electric Power ◽  
Power Output ◽  
Energy Harvester ◽  
Vibration Energy ◽  
Flexible Structure ◽  
Two Dimensional ◽  
Acoustic Structure ◽  
Acoustic Cavity ◽  
Piezoelectric Energy

A class of piezoelectric energy harvester is presented to harness the vibration energy from coupled acoustic-structure systems such as those existing, for example, in aircraft acoustic cabin/flexible fuselage systems. Generic idealization of any of these systems involves the interaction between the dynamics of an acoustic cavity coupled with a flexible structure. Pressure oscillations inside the acoustic cavity induce vibration in the flexible structure and vice versa. Harnessing the associated vibration energy can be utilized to potentially power various vibration, noise, and health monitoring instrumentation. In this paper, the emphasis is placed on harnessing this energy using a special class of piezoelectric energy harvesters coupled with a dynamic magnifier in order to amplify its power output as compared to conventional harvesters. A finite element model (FEM) is developed to predict the performance of this class of harvesters in terms of the mechanical displacements of the flexible structure, the pressure inside the acoustic cavity, and the output electric voltage of the piezoelectric harvester. The FEM is formulated here to analyze a two-dimensional (2D) energy harvesting system which is composed of a rigid acoustic cavity coupled, at one end, with a vibrating base structure to which is attached the piezoelectric energy harvester. The developed FEM is exercised to predict the output electric power for broad interior pressure excitation frequencies. Numerical examples are presented to illustrate the behavior of the harvester and extract the conditions for maximum electric power output of the harvester. The obtained results demonstrate the feasibility of the dynamic magnifier concept as an effective means for enhancing the energy harvesting as compared to conventional harvesters. The presented model can be easily extended and applied to more complex fluid–structure systems such as aircraft and vehicle cabins.

scholarly journals Circuit Optimization for Enhancing the Output Power of a Piezoelectric Energy Harvester

2018 ◽  
Vol 1 (2) ◽  
pp. p6
Author(s):  
Anahita Zargarani ◽  
S. Nima Mahmoodi
Keyword(s):  
Output Power ◽  
Energy Harvester ◽  
Resistive Load ◽  
Circuit Optimization ◽  
Inductive Load ◽  
Vibration Energy Harvester ◽  
New Approach ◽  
Piezoelectric Energy ◽  
Piezoelectric Vibration ◽  
Load Circuit

In this paper, a new method is proposed for improving a piezoelectric energy harvester’s output power. A piezoelectric vibration energy harvester has an inherent internal capacitance. The new approach adopts inductance to reduce the reactance of the internal capacitance and enhance the output power. To show the practicality of this method, four electrical circuits are investigated numerically and experimentally for a piezoelectric beam energy harvester: Simple Resistive Load, Inductive Load, standard AC-DC, and Inductive AC-DC circuits. An Inductive Load circuit is built by adding an inductor to a Simple Resistive Load circuit, while an Inductive AC-DC circuit is built by adding an inductor to a standard AC-DC circuit. Experimental results indicate that the Inductive Load and the Inductive AC-DC circuits avail the Simple Resistive Load and standard AC-DC circuits respectively. The inductive AC-DC circuit shows a 6.7% increase in the output power compared to the standard AC-DC circuit.

scholarly journals Self-Powered Operational Amplifying System with a Bipolar Voltage Generator Using a Piezoelectric Energy Harvester

Electronics ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 41
Author(s):  
Se Yeong Jeong ◽  
Jae Yong Cho ◽  
Seong Do Hong ◽  
Wonseop Hwang ◽  
Hamid Jabbar ◽  
...  
Keyword(s):  
Power Supply ◽  
Energy Harvester ◽  
Electronic Device ◽  
Power Sources ◽  
Piezoelectric Energy ◽  
Bipolar Voltage ◽  
Voltage Generator ◽  
Self Powered ◽  
Piezoelectric Devices ◽  
Dual Power

Piezoelectric devices previously studied usually generated a single voltage to power an electronic device. However, depending on the user’s purpose, the electronic device may need dual power supply. Here, we report a self-powered bipolar voltage generator using a piezoelectric energy harvester with two piezoelectric devices. When a force is applied to the piezoelectric energy harvester, the two piezoelectric devices separately supply positive and negative voltages to the operational amplifier that requires dual power supply to amplify an AC signal that have positive and negative polarity. At the same time, the harvester supplies additional power to an electronic device through a DC-to-DC converter with an output voltage of 3.3 V. This technique proves the feasibility of applying the piezoelectric energy harvester to operational amplifying systems in the field of sound, earthquake, and sonar that require both bipolar and single voltages without external power sources.

Experimental Investigation for Enhancing the Output Power of a Piezoelectric Energy Harvester

2017 ◽  
Author(s):  
Anahita Zargarani ◽  
S. Nima Mahmoodi
Keyword(s):  
Experimental Investigation ◽  
Output Power ◽  
Experimental Approach ◽  
Energy Harvester ◽  
Resistive Load ◽  
Inductive Load ◽  
Electrical Circuits ◽  
Piezoelectric Energy ◽  
Piezoelectric Beam

This paper investigates an experimental approach for enhancing the output power of a piezoelectric energy harvester. The proposed method adopts inductance to reduce the effect of the piezoelectric harvester’s impedance, and boost the output power. Four electrical circuits for a piezoelectric beam harvester are investigated experimentally; Simple Resistive Load (SRL), Inductive Load (IL), Standard AC-DC, and Inductive AC-DC circuits. The results show that the adaptation of inductor in the IL and Inductive AC-DC improves the output power compared to the SRL and Standard AC-DC respectively. The Inductive AC-DC circuit is shown to increase the output power by 6.7% in comparison to the existing standard AC-DC circuits.

scholarly journals Auxetic piezoelectric energy harvesters for increased electric power output

AIP Advances ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 015104 ◽  
Author(s):  
Qiang Li ◽  
Yang Kuang ◽  
Meiling Zhu
Keyword(s):  
Electric Power ◽  
Power Output ◽  
Electric Power Output ◽  
Energy Harvesters ◽  
Piezoelectric Energy

scholarly journals Asymptotic and Spectral Analysis of a Model of the Piezoelectric Energy Harvester with the Timoshenko Beam as a Substructure

2018 ◽  
Vol 8 (9) ◽  
pp. 1434 ◽  
Author(s):  
Marianna Shubov
Keyword(s):  
Evolution Equation ◽  
Timoshenko Beam ◽  
Energy Harvester ◽  
Mode Shapes ◽  
Asymptotic Formulas ◽  
Beam Model ◽  
Resistive Load ◽  
Vibrational Modes ◽  
Piezoelectric Energy ◽  
Piezoelectric Layers

Mathematical analysis of the well known model of a piezoelectric energy harvester is presented. The harvester is designed as a cantilever Timoshenko beam with piezoelectric layers attached to its top and bottom faces. Thin, perfectly conductive electrodes are covering the top and bottom faces of the piezoelectric layers. These electrodes are connected to a resistive load. The model is governed by a system of three partial differential equations. The first two of them are the equations of the Timoshenko beam model and the third one represents Kirchhoff’s law for the electric circuit. All equations are coupled due to the piezoelectric effect. We represent the system as a single operator evolution equation in the Hilbert state space of the system. The dynamics generator of this evolution equation is a non-selfadjoint matrix differential operator with compact resolvent. The paper has two main results. Both results are explicit asymptotic formulas for eigenvalues of this operator, i.e., the modal analysis for the electrically loaded system is performed. The first set of the asymptotic formulas has remainder terms of the order O ( 1 n ) , where n is the number of an eigenvalue. These formulas are derived for the model with variable physical parameters. The second set of the asymptotic formulas has remainder terms of the order O ( 1 n 2 ) , and is derived for a less general model with constant parameters. This second set of formulas contains extra term depending on the electromechanical parameters of the model. It is shown that the spectrum asymptotically splits into two disjoint subsets, which we call the α -branch eigenvalues and the θ -branch eigenvalues. These eigenvalues being multiplied by “i” produce the set of the vibrational modes of the system. The α -branch vibrational modes are asymptotically located on certain vertical line in the left half of the complex plane and the θ -branch is asymptotically close to the imaginary axis. By having such spectral and asymptotic results, one can derive the asymptotic representation for the mode shapes and for voltage output. Asymptotics of vibrational modes and mode shapes is instrumental in the analysis of control problems for the harvester.

Enhancing the Output Power of a Piezoelectric Energy Harvester by Reducing the Effect of the Internal Capacitance Using Inductance

2016 ◽  
Author(s):  
Anahita Zargarani ◽  
S. Nima Mahmoodi
Keyword(s):  
Power Output ◽  
Energy Harvester ◽  
Resistive Load ◽  
Inductive Load ◽  
Electrical Circuits ◽  
Piezoelectric Energy ◽  
Innovative Method ◽  
Piezoelectric Beam ◽  
Power Outputs ◽  
Piezoelectric Harvester

This paper describes an innovative method for enhancing the power output of a piezoelectric energy harvester. The proposed approach is adopting inductance to reduce the effect of the internal capacitance of the piezoelectric harvester to boost the power output. Four electrical circuits for a piezoelectric beam harvester are studied; Simple Resistive Load (SRL), Inductive Load (IL), Standard AC-DC, and Inductive AC-DC circuits. An inductor is added to the SRL and standard AC-DC circuits to build the new IL and Inductive AC-DC circuits respectively. The power outputs of the four circuits are then studied. The results show that the adaptation of inductor enhances the power output. The IL circuit enhances the power output comparing to the SRL circuit. The Inductive AC-DC circuit also avails the standard AC-DC circuit.

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