scholarly journals Simulation and FEM Analysis of Applied Force Effects for Energy Harvesting in Piezoelectric Bimorph Device

2015 ◽  
Author(s):  
Panapong Songsukthawan ◽  
Chaiyan Jettanasen
Keyword(s):  
Energy Harvesting ◽  
Fem Analysis ◽  
Applied Force ◽  
Piezoelectric Bimorph

scholarly journals Modeling and Experiment of a V-Shaped Piezoelectric Energy Harvester

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Yue Zhao ◽  
Yi Qin ◽  
Lei Guo ◽  
Baoping Tang
Keyword(s):  
Energy Harvesting ◽  
Frequency Band ◽  
Electromechanical Coupling ◽  
Energy Harvester ◽  
Structural Parameters ◽  
Ambient Vibration ◽  
Piezoelectric Bimorph ◽  
Actual Structure ◽  
Piezoelectric Energy ◽  
Operation Frequency

Vibration-based energy harvesting technology is the most promising method to solve the problems of self-powered wireless sensor nodes, but most of the vibration-based energy harvesters have a rather narrow operation bandwidth and the operation frequency band is not convenient to adjust when the ambient frequency changes. Since the ambient vibration may be broadband and changeable, a novel V-shaped vibration energy harvester based on the conventional piezoelectric bimorph cantilevered structure is proposed, which successfully improves the energy harvesting efficiency and provides a way to adjust the operation frequency band of the energy harvester conveniently. The electromechanical coupling equations are established by using Euler-Bernoulli equation and piezoelectric equation, and then the coupled circuit equation is derived based on the series connected piezoelectric cantilevers and Kirchhoff's laws. With the above equations, the output performances of V-shaped structure under different structural parameters and load resistances are simulated and discussed. Finally, by changing the angle θ between two piezoelectric bimorph beams and the load resistance, various comprehensive experiments are carried out to test the performance of this V-shaped energy harvester under the same excitation. The experimental results show that the V-shaped energy harvester can not only improve the frequency response characteristic and the output performance of the electrical energy, but also conveniently tune the operation bandwidth; thus it has great application potential in actual structure health monitoring under variable working condition.

Broad-Band Vibro-Impacting Energy Harvester

2010 ◽  
Vol 654-656 ◽  
pp. 2799-2802 ◽  
Author(s):  
Scott D. Moss ◽  
Ian Powlesland ◽  
Michael Konak ◽  
Alex Barry ◽  
Steve C. Galea ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Energy Harvester ◽  
Vibration Spectrum ◽  
Broad Band ◽  
Critical Issue ◽  
Piezoelectric Bimorph ◽  
Aircraft Structure ◽  
Frequency Agile ◽  
Periodic Replacement ◽  
Random Band

The certification of retro-fitted structural health monitoring (SHM) systems for use on aircraft raises a number of challenges. One critical issue is determining the optimal means of supplying power to these systems, given that access to the existing aircraft power-system is likely to be problematic. Other conventional options such as primary cells can be difficult to certify and would need periodic replacement, which in an aircraft context would pose a serious maintenance issue. Previously, the DSTO has shown that a structural-strain based energy harvesting approach can be used to power a device for SHM of aircraft structures. Acceleration-based energy harvesting from airframes is more demanding (than a strain based approach) since the vibration spectrum of an aircraft structure varies dynamically with flight conditions, and hence a frequency agile or (relatively) broad-band device is often required to maximize the energy harvested. This paper reports on the development of a prototype vibro-impacting energy harvester with a ~59 gram flying mass and two piezoelectric bimorph-stops. Over the frequency range 29-41 Hz using a continuous-sine 450 milli-g r.m.s. excitation, the harvester delivers an average of 5.1 mW. From a random band-passed 25-45 Hz excitation with r.m.s. 450 milli-g, the average harvester output is 1.7 mW.

Semi-analytical model of an acoustic black hole piezoelectric bimorph cantilever for energy harvesting

2021 ◽  
Vol 494 ◽  
pp. 115790
Author(s):  
Jie Deng ◽  
Oriol Guasch ◽  
Ling Zheng ◽  
Tingting Song ◽  
Yanshu Cao
Keyword(s):  
Black Hole ◽  
Energy Harvesting ◽  
Analytical Model ◽  
Piezoelectric Bimorph

A Miniature Energy Harvesting Device Using Martensite Variant Reorientation

2013 ◽  
Vol 738-739 ◽  
pp. 411-415 ◽  
Author(s):  
Manfred Kohl ◽  
Rui Zhi Yin ◽  
Viktor Pinneker ◽  
Yossi Ezer ◽  
Alexei Sozinov
Keyword(s):  
Magnetic Field ◽  
Energy Harvesting ◽  
Magnetic Flux ◽  
Output Voltage ◽  
Permanent Magnets ◽  
Magnetic Circuit ◽  
Compressive Loading ◽  
Piezoelectric Bimorph ◽  
Martensite Variant ◽  
Cyclic Motion

This paper presents a miniature energy harvesting device that makes use of stress-induced cyclic martensite variant reorientation in a Ni-Mn-Ga single crystal of 0.3x2x2 mm³ size. The stress- and magnetic field-induced reorientation is investigated for single crystalline Ni50.2Mn28.4Ga21.4 specimens of 0.3 mm thickness that are cut along the (100) direction and subjected to uniaxial compressive loading. A demonstrator is presented consisting of a FSMA specimen placed in the gap of a magnetic circuit to guide and enhance the field of biasing permanent magnets. The cyclic motion of a piezoelectric bimorph actuator is used to mechanically load the FSMA specimen. The corresponding change of magnetic flux induces an electrical voltage in a pick-up coil (N=2000 turns). The effects of biasing magnetic field, strain amplitude and strain velocity are investigated. An optimum magnetic field of 0.4 T exists, where the output voltage reaches 120 mV at a strain velocity of 0.006 ms-1.

Modeling and Experimental Investigation of a Periodically Excited Hybrid Energy-Harvesting Generator

2015 ◽  
Vol 0 (0) ◽  
Author(s):  
Viktor Hofmann ◽  
Gleb Kleyman ◽  
Jens Twiefel
Keyword(s):  
Experimental Investigation ◽  
Energy Harvesting ◽  
Energy Harvester ◽  
Piezoelectric Bimorph ◽  
Electric Power Output ◽  
Hybrid Energy ◽  
Energy Harvesting System ◽  
Harmonic Components ◽  
Hybrid Energy Harvesting ◽  
Harmonic System

AbstractIn this article the modeling of a broadband energy harvester utilizing piezoelectric and electromagnetic effects for rotational applications is presented. The hybrid energy harvester consists of a one-side-clamped piezoelectric bimorph with a solenoid on the free end and is excited periodically but non-harmonically by magnets that are fixed on a rotating object. To estimate and describe the performance of the energy harvester concept a linear semi-analytical model for the bimorph and the solenoid is developed and then enhanced for non-harmonic system oscillations by decomposing them into their harmonic components. A comparison between the calculated and measurement signals of a prototype device shows great conformity. According to model-based and experimental analysis, the hybrid system has good broadband behavior regarding electric power output. That aspect makes the device a perfect energy-harvesting system for application with highly fluctuating revolution speeds like miniature wind turbines.

Modeling and Analysis of Piezoelectric Bimorph Cantilever for Vibration Energy Harvesting

2012 ◽  
Vol 610-613 ◽  
pp. 2583-2588
Author(s):  
Jun Jie Gong ◽  
Ying Ying Xu ◽  
Zhi Lin Ruan
Keyword(s):  
Energy Harvesting ◽  
Cantilever Beam ◽  
Electromechanical Coupling ◽  
Theory Of Elasticity ◽  
Vibration Energy ◽  
Piezoelectric Bimorph ◽  
Vibration Energy Harvesting ◽  
Output Displacement ◽  
Fea Model ◽  
Piezoelectric Cantilever

The vibration energy can be converted to electrical energy directly and efficiently using piezoelectric cantilever beam based on piezoelectric effect. Since its structure is simple and its working process is unpoisonous to the environment, the piezoelectric cantilever beam can be used in various fields comprehensively. The present paper perform an analysis on the vibration energy harvesting problem of piezoelectric bimorph cantilever beam. The piezoelectric cantilever model has been formulated using the theory of elasticity mechanics and piezoelectric theory. A prototype of piezoelectric power generator is set up to do vibration test, and the electromechanical coupling FEA model under vibration load is built to simulate its output displacement, stress and voltage. The present numerical results of piezoelectric bimorph cantilever coincide well with our related experimental results, which shows the validity of the present FEA model and the relate results.

Discontinuous Dynamics of a Frequency Up-Conversion Piezoelectric Harvester

2019 ◽  
Author(s):  
Saeed Onsorynezhad ◽  
Fengxia Wang
Keyword(s):  
Energy Harvesting ◽  
Complex Dynamics ◽  
Excitation Frequency ◽  
Dynamics Analysis ◽  
Piezoelectric Bimorph ◽  
Periodic Motions ◽  
Piezoelectric Energy ◽  
Piezoelectric Beam ◽  
Period 2 ◽  
Euler Bernoulli Beam

Abstract This study investigates an impact based frequency up-conversion mechanism via discontinuous dynamics analysis. The mechanism composed of a stopper and a piezoelectric bimorph. The piezoelectric beam is subjected to a sinusoidal base excitation and impacts with the stopper. In this system, complex dynamics are induced by impacts, hence to better understand the energy harvesting performance of the piezoelectric beam, we seek the steady state periodic motions of the system. As the excitation frequency varies, the output voltage and power of the piezoelectric beam with periodic motions were obtained. The piezoelectric bimorph was modeled as an Euler-Bernoulli beam, and the linear piezoelectric constitutive equations were used to obtain the equations of the piezoelectric beam. The generated voltage and power were obtained using discontinuous dynamics analysis. In order to better analyze the energy harvesting performance of the piezoelectric energy harvester, the stable and unstable periodic motions were obtained. The bifurcation diagram of the period-1 and period-2 motions were obtained analytically as the excitation frequency varying.

Sign in / Sign up

Export Citation Format

Share Document