Techniques for Enhancing Piezoelectric Energy-Harvesting Efficiency

2017 ◽  
Author(s):  
Ashok K. Batra ◽  
Almuatasim Alomari
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency

scholarly journals Size-dependent piezoelectric and mechanical properties of electrospun P(VDF-TrFE) nanofibers for enhanced energy harvesting

2016 ◽  
Vol 4 (6) ◽  
pp. 2293-2304 ◽  
Author(s):  
Gerardo Ico ◽  
Adam Showalter ◽  
Wayne Bosze ◽  
Shannon C. Gott ◽  
Bum Sung Kim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Energy Harvesting ◽  
Dimensional Reduction ◽  
Piezoelectric Coefficient ◽  
Piezoelectric Energy Harvesting ◽  
Phase Content ◽  
Size Dependent ◽  
Piezoelectric Energy ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency

Dimensional reduction of electrospun P(VDF-TrFE) increases crystallinity (DOC), electroactive phase content (EA), Young’s modulus (E) and piezoelectric coefficient (d33), collectively leading to enhanced piezoelectric energy harvesting efficiency.

scholarly journals Modeling and Efficiency Analysis of a Piezoelectric Energy Harvester Based on the Flow Induced Vibration of a Piezoelectric Composite Pipe

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4277 ◽  
Author(s):  
Maoying Zhou ◽  
Mohannad Al-Furjan ◽  
Ban Wang
Keyword(s):  
Energy Harvesting ◽  
Energy Harvester ◽  
Fluid Structure Interaction ◽  
Piezoelectric Composite ◽  
Flow Induced Vibration ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Piezoelectric Energy ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency

This paper proposes and investigates a piezoelectric energy harvesting system based on the flow induced vibration of a piezoelectric composite cantilever pipe. Dynamic equations for the proposed energy harvester are derived considering the fluid-structure interaction and piezoelectric coupling vibration. Linear global stability analysis of the fluid-solid-electric coupled system is done using the numerical continuation method to find the neutrally stable vibration mode of the system. A measure of the energy harvesting efficiency of the system is proposed and analyzed. A series of simulations are conducted to throw light upon the influences of mass ratio, dimensionless electromechanical coupling, and dimensionless connected resistance upon the critical reduced velocity and the normalized energy harvesting efficiency. The results provide useful guidelines for the practical design of piezoelectric energy harvester based on fluid structure interaction and indicate some future topics to be investigated to optimize the device performance.

A Piezoelectric Energy Harvesting Damper for Low-Frequency Application

2015 ◽  
Author(s):  
Arata Masuda ◽  
Yasuhiro Hiraki ◽  
Naoto Ikeda ◽  
Akira Sone
Keyword(s):  
Energy Harvesting ◽  
High Efficiency ◽  
Electric Energy ◽  
Low Frequency ◽  
Offshore Structures ◽  
Piezoelectric Energy ◽  
Piezoelectric Cantilever ◽  
Work Input ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency

In this study, a design of an energy harvesting damper for low-frequency applications, such as energy harvesting from long period infrastructures, tanks and pipings, and maritime and offshore structures, is presented. In this design, the low-frequency relative motion of the damper is transformed into a high-frequency motion of a piezoelectric cantilever beam by a mechanical switching mechanism, referred to as “plucking” mechanism that couples and decouples the cantilever to the damper rod so that the input energy into the damper is converted to electric energy with high efficiency. In this paper, the energy harvesting efficiency is theoretically calculated for the harvesters with and without plucking mechanism and the optimized maximum performance is derived. Then the electrical switching circuit for the enhancement of the electromechanical conversion efficiency, referred to as “SSHI” interface is introduced. Numerical case studies suggest that the harvester with an ideally implemented parallel SSHI circuit can retrieve over 70 % energy of the maximum mechanical work input on the damper rod.

scholarly journals How Harvest More Ambient Energy from Environmental Vibration with a Multiple-Frequency Excitation

2021 ◽  
Author(s):  
Jiawen Song ◽  
Guihong Sun ◽  
Xin Zeng ◽  
Xiangwen Li ◽  
Quan Bai ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Cantilever Beam ◽  
Splitting Method ◽  
Test Method ◽  
Multiple Frequency ◽  
Piezoelectric Energy ◽  
Environmental Vibration ◽  
Frequency Excitation ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency

Abstract We propose piezoelectric energy harvester (PEH) with double-cantilever-beam (DCB) undergoing coupled bending-torsion vibrations by combining width-splitting method and asymmetric mass, in order that more ambient energy could be harvested from environmental vibration with multiple-frequency excitation. The geometrical dimensions are optimized for PEHDCB, when the maximum of output peak voltages Up−max and resonance frequency difference (Δf0) between the first and second modes are chosen as optimization objectives based on orthogonal test method. The energy harvesting efficiency is evaluated by the proportion of half-power bandwidth and quality factor, and the experimental and simulation results are compared to verify reliability. The Up−max1 and Pp−max1 are increased 25.2% and 57.3% for PEHDCB under the multi-frequency excitation, when the split-width method is applied into PEH with single-cantilever-beam (SCB) undergoing coupled bending-torsion vibrations. The deviations of Up−max1 and f0 are at the ranges of 4.9–14.2% and 2.2–2.5% for PEHDCB under the different mass ratios, and the measurement reliability is acceptable considering incomplete clamping, damping and inevitable assembly effects. The energy harvesting efficiency of PEHDCB presented is much higher than that of the conventional PEHSCB from environmental vibration with multiple-frequency excitation.

Investigation of efficient piezoelectric energy harvesting from impulsive force

2020 ◽  
Vol 59 (SP) ◽  
pp. SPPD04
Author(s):  
S. Aphayvong ◽  
T. Yoshimura ◽  
S. Murakami ◽  
K. Kanda ◽  
N. Fujimura
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Energy Harvesting ◽  
Impulsive Force ◽  
Piezoelectric Energy

scholarly journals Piezoelectric Energy Harvesting Solutions: A Review

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3512 ◽  
Author(s):  
Corina Covaci ◽  
Aurel Gontean
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Effect ◽  
Piezoelectric Transducers ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Direct Piezoelectric Effect ◽  
Harvesting Technique ◽  
Different Shapes ◽  
Piezoelectric Devices ◽  
Review Current

The goal of this paper is to review current methods of energy harvesting, while focusing on piezoelectric energy harvesting. The piezoelectric energy harvesting technique is based on the materials’ property of generating an electric field when a mechanical force is applied. This phenomenon is known as the direct piezoelectric effect. Piezoelectric transducers can be of different shapes and materials, making them suitable for a multitude of applications. To optimize the use of piezoelectric devices in applications, a model is needed to observe the behavior in the time and frequency domain. In addition to different aspects of piezoelectric modeling, this paper also presents several circuits used to maximize the energy harvested.

scholarly journals Wake-foil interactions and energy harvesting efficiency in tandem oscillating foils

2021 ◽  
Vol 6 (7) ◽  
Author(s):  
Bernardo Luiz R. Ribeiro ◽  
Yunxing Su ◽  
Quentin Guillaumin ◽  
Kenneth S. Breuer ◽  
Jennifer A. Franck
Keyword(s):  
Energy Harvesting ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency ◽  
Oscillating Foils
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