scholarly journals Future Energy Source for Remote IoT Systems using MEMS-based Piezoelectric Energy Harvesting Devices.

2021 ◽  
Vol 1979 (1) ◽  
pp. 012067
Author(s):  
F. Fareeza ◽  
S. Krishna Veni ◽  
Chunchu Rambabu ◽  
Tigabu Zewude Yanore ◽  
P. Rajkumar
Keyword(s):  
Energy Source ◽  
Energy Harvesting ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Energy Harvesting Devices

Topology Optimization of Piezoelectric Energy Harvesting Devices Subjected to Stochastic Excitation

2010 ◽  
Author(s):  
Zheqi Lin ◽  
Hae Chang Gea ◽  
Shutian Liu
Keyword(s):  
Topology Optimization ◽  
Energy Harvesting ◽  
Electrical Energy ◽  
Ambient Vibration ◽  
Piezoelectric Energy Harvesting ◽  
The Past ◽  
Piezoelectric Energy ◽  
Random Responses ◽  
Pseudo Excitation ◽  
Energy Harvesting Devices

Converting ambient vibration energy into electrical energy using piezoelectric energy harvester has attracted much interest in the past decades. In this paper, topology optimization is applied to design the optimal layout of the piezoelectric energy harvesting devices. The objective function is defined as to maximize the energy harvesting performance over a range of ambient vibration frequencies. Pseudo excitation method (PEM) is applied to analyze structural stationary random responses. Sensitivity analysis is derived by the adjoint method. Numerical examples are presented to demonstrate the validity of the proposed approach.

A Low-order Model for the Design of Piezoelectric Energy Harvesting Devices

2008 ◽  
Vol 20 (5) ◽  
pp. 495-504 ◽  
Author(s):  
Jeffrey L. Kauffman ◽  
George A. Lesieutre
Keyword(s):  
Energy Harvesting ◽  
Design Tool ◽  
Mode Shapes ◽  
Piezoelectric Energy Harvesting ◽  
Coupling Coefficients ◽  
Order Model ◽  
Power Sources ◽  
Piezoelectric Energy ◽  
Energy Harvesting Devices ◽  
Low Order

Piezoelectric energy harvesting devices are an attractive approach to providing remote wireless power sources. They operate by converting available vibration energy and storing it as electrical energy. Currently, most devices rely on mechanical excitation near their resonance frequency, so a low-order model which computes a few indicators of device performance is a critical design tool. Such a model, based on the assumed modes method, develops equations of motion to provide rapid computations of key device parameters, such as the natural frequencies, mode shapes, and electro-mechanical coupling coefficients. The model is validated with a comparison of its predictions and experimental data.

Demonstrating the effects of elastic support on power generation and storage capability of piezoelectric energy harvesting devices

2018 ◽  
Vol 30 (2) ◽  
pp. 323-332 ◽  
Author(s):  
Mohammad Reza Zamani Kouhpanji
Keyword(s):  
Power Generation ◽  
Energy Harvesting ◽  
Elastic Properties ◽  
Elastic Support ◽  
Physical Parameters ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Piezoelectric Beam ◽  
Energy Harvesting Devices ◽  
And Storage

This study represents effects of an elastic support on the power generation and storage capability of piezoelectric energy harvesting devices. The governing equations were derived and solved for a piezoelectric energy harvesting device made of elastic support, multilayer piezoelectric beam, and a proof mass at its free end. Furthermore, a Thevenin model for a rechargeable battery was considered for storage of the produced power of the piezoelectric energy harvesting device. Analyzing the time-domain and frequency-domain responses of the piezoelectric energy harvesting device on an elastic support shows that the elastic deformation of the support significantly reduces the power generation and storage capability of the device. It was also found that the power generation and storage capability of the piezoelectric energy harvesting device can be enhanced by choosing appropriate physical parameters of the piezoelectric beam even if the elastic properties of the support are poor relative to elastic properties of the piezoelectric beam. These results provide an insightful understanding for designing and material selection for the support in order to reach the highest possible power generation and storage capability for piezoelectric energy harvesting devices.

A Feasibility Study in Energy Harvesting from Piezoelectric Keyboards

2017 ◽  
Vol 6 (2) ◽  
pp. 1-23 ◽  
Author(s):  
Tom Page
Keyword(s):  
Energy Source ◽  
Renewable Energy ◽  
Energy Harvesting ◽  
Power Output ◽  
Vibrational Energy ◽  
Data Gathering ◽  
Piezoelectric Energy Harvesting ◽  
Stored Energy ◽  
Piezoelectric Energy ◽  
Work Done

The aim of the study was to investigate as to whether piezoelectric energy harvesting could be a viable contributor to a source of renewable energy for the future. Here, a keyboard usage study was conducted using a data gathering computer program called WhatPulse in which participants and their keyboards were monitored for one week. The results were used in conjunction with power output figures from work done by Wacharasindhu and Kwon (2008) who prototyped a piezoelectric keyboard and found it was capable of producing 650 µJ of energy per keystroke. The results from this study suggest piezoelectric keyboards could not be used to create self-sustaining systems for any of the devices proposed. Further uses for the stored energy have been suggested but the question to the viability of piezoelectric keyboards as a useful energy source looks discouraging. Other applications for the technology could be explored to enhance power output and utilise larger amounts of vibrational energy.

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