Finite element analysis of a unimorph cantilever for piezoelectric energy harvesting

2012 ◽  
Vol 40 (4) ◽  
pp. 341-351 ◽  
Author(s):  
Qingping Wang ◽  
Xuebing Pei ◽  
Qi Wang ◽  
Shenglin Jiang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Energy Harvesting ◽  
Piezoelectric Energy Harvesting ◽  
Element Analysis ◽  
Piezoelectric Energy ◽  
Unimorph Cantilever

Equivalent Circuit Modeling and Analysis of Aerodynamic Vortex-induced Piezoelectric Energy Harvesting

2022 ◽  
Author(s):  
Jinda Jia ◽  
Xiaobiao Shan ◽  
Xingxu Zhang ◽  
Tao Xie ◽  
Yaowen Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Wind Speed ◽  
Energy Harvesting ◽  
Equivalent Circuit ◽  
Piezoelectric Energy Harvesting ◽  
Circuit Modeling ◽  
Element Analysis ◽  
Piezoelectric Energy ◽  
Equivalent Circuit Modeling

Abstract Low-speed wind energy has potential to be captured for powering micro-electro-mechanical systems or sensors in remote inaccessible place by piezoelectric energy harvesting from vortex-induced vibration (VIV). Conventional theory or finite-element analysis mostly considers a simple pure resistance as interface circuit because of the complex fluid-solid-electricity coupling in aeroelastic piezoelectric energy harvesting. However, the output alternating voltage should be rectified to direct voltage to be used in practical occasions, where the theoretical analysis and finite-element analysis for complex interface may be cumbersome or difficult. To solve this problem, this paper presents an equivalent circuit modeling (ECM) method to analyze the performance of vortex-induced energy harvesters. Firstly, the equivalent analogies from the mechanical and fluid domain to the electrical domain are built. The linear mechanical and fluid elements are represented by standard electrical elements. The nonlinear elements are represented by electrical non-standard user-defined components. Secondly, the total fluid-solid-electricity coupled mathematical equations of the harvesting system are transformed into electrical formulations based on the equivalent analogies. Finally, the entire ECM is established in a circuit simulation software to perform system-level transient analyses. The simulation results from ECM have good agreement with the experimental measurements. Further parametric studies are carried out to assess the influences of wind speed and resistance on the output power of the alternating circuit interface and the capacitor filter circuit. At wind speed of 1.2 m/s, the energy harvester could generate an output power of 81.71 μW with the capacitor filter circuit and 114.64 μW with the alternating circuit interface. The filter capacitance is further studied to ascertain its effects on the stability of output and the settling time.

Energy Harvesting From Droplet Interface Bilayers

2015 ◽  
Author(s):  
Ashok K. Kancharala ◽  
Eric Freeman ◽  
Michael K. Philen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Energy Harvesting ◽  
Nonlinear Finite Element ◽  
Time Dependent ◽  
External Excitation ◽  
Biologically Inspired ◽  
Element Analysis ◽  
Interfacial Membrane ◽  
Membrane Deflection

Biologically inspired droplet interface bilayers have found applications in the development of hair cell sensors and other mechanotransduction applications. In this research, the flexoelectric capability of the droplet bilayers under external excitation is explored for energy harvesting. Traditionally, membrane capacitance models are being used for inferring the magnitude of the membrane deflection which do not account for the relation between the applied force or deflection and the deflection of the interfacial membrane and time dependent variations. In this work, the dynamic behavior of the droplets under external excitation has been modeled using nonlinear finite element analysis. A flexoelectric model including mechanical, electrical, and chemical sensitivities has been developed and coupled with the calculated bilayer deformations to predict the mechanotransductive response of the droplets under excitation. Using the developed framework, the possibilities of energy harvesting for different droplet configurations have been investigated and reported.

scholarly journals Frequency Tuning of Unimorph Cantilever for Piezoelectric Energy Harvesting

2007 ◽  
Vol 17 (12) ◽  
pp. 660-663 ◽  
Author(s):  
Hyung-Chan Kim ◽  
Hyun-Cheol Song ◽  
Dae-Yong Jeong ◽  
Hyun-Jai Kim ◽  
Seok-Jin Yoon ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Frequency Tuning ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Unimorph Cantilever

scholarly journals Development of a hybrid vibration converter for real vibration source / Entwicklung eines Hybrid-Vibrationswandlers für eine echte Schwingungsquelle

2019 ◽  
Vol 86 (s1) ◽  
pp. 57-61 ◽  
Author(s):  
Sonia Bradai ◽  
Slim Naifar ◽  
Olfa Kanoun
Keyword(s):  
Magnetic Field ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Energy Harvesting ◽  
Resonant Frequency ◽  
Ambient Vibration ◽  
Vibration Source ◽  
Frequency Bandwidth ◽  
Element Analysis ◽  
The Magnetic Field

AbstractHarvesting energy from ambient vibration sources is challenging due to its low characteristic amplitude and frequencies. In this purpose, this work presents a compact hybrid vibration converter based on electromagnetic and magnetoelectric principles working for a frequency bandwidth and under real vibration source properties. The combination of especially these two principles is mainly due to the fact that both converters can use the same changes of the magnetic field for energy harvesting. The converter was investigated using finite element analysis and validated experimentally. Results have shown that a frequency bandwidth up to 12 Hz with a characteristic resonant frequency at 24 Hz and a power density of 0.11mW/cm3 can be reached.

Finite-Element Analysis of a Varying-Width Bistable Piezoelectric Energy Harvester

2015 ◽  
Vol 3 (12) ◽  
pp. 1243-1249 ◽  
Author(s):  
Tarun Kumar ◽  
Rajeev Kumar ◽  
Vishal S. Chauhan ◽  
Jens Twiefel
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Energy Harvester ◽  
Element Analysis ◽  
Piezoelectric Energy

Finite element analysis on solar energy harvesting using ferroelectric polymer

Solar Energy ◽  
2015 ◽  
Vol 115 ◽  
pp. 722-732 ◽  
Author(s):  
Manish Sharma ◽  
Aditya Chauhan ◽  
Rahul Vaish ◽  
Vishal Singh Chauhan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Energy Harvesting ◽  
Solar Energy ◽  
Element Analysis ◽  
Ferroelectric Polymer ◽  
Solar Energy Harvesting
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