Design study of piezoelectric energy-harvesting devices for generation of higher electrical power using a coupled piezoelectric-circuit finite element method

Piezoelectric energy harvesting from ambient vibrations is well studied, but harvesting from quasi-static responses is not yet fully explored. The lack of attention is because quasi-static actions are much slower than the resonance frequency of piezoelectric oscillators to achieve optimal outputs; however, they can be a common mechanical energy resource: from large civil structure deformations to biomechanical motions. The recent advances in bio-micro-electro-mechanical systems and wireless sensor technologies are motivating the study of piezoelectric energy harvesting from quasi-static conditions for low-power budget devices. This article presents a new approach of using quasi-static deformations to generate electrical power through an axially compressed bilaterally constrained strip with an attached piezoelectric layer. A theoretical model was developed to predict the strain distribution of the strip’s buckled configuration for calculating the electrical energy generation. Results from an experimental investigation and finite element simulations are in good agreement with the theoretical study. Test results from a prototyped device showed that a peak output power of 1.33 μW/cm2 was generated, which can adequately provide power supply for low-power budget devices. And a parametric study was also conducted to provide design guidance on selecting the dimensions of a device based on the external embedding structure.

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Topology Optimization of Piezoelectric Energy Harvesting Devices Subjected to Stochastic Excitation

Volume 1: 36th Design Automation Conference, Parts A and B ◽

10.1115/detc2010-28856 ◽

2010 ◽

Cited By ~ 1

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.

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Design study on photoacoustic probe to detect prostate cancer using 3D Monte Carlo simulation and finite element method

Biomedical Engineering Letters ◽

10.1007/s13534-014-0150-2 ◽

2014 ◽

Vol 4 (3) ◽

pp. 250-257 ◽

Cited By ~ 13

Author(s):

Sherif Hamdy El-Gohary ◽

Mohamed Kilany Metwally ◽

Seyoung Eom ◽

Seung Hyun Jeon ◽

Kyung Min Byun ◽

...

Keyword(s):

Prostate Cancer ◽

Finite Element Method ◽

Monte Carlo Simulation ◽

Finite Element ◽

Monte Carlo ◽

Design Study ◽

Detect Prostate Cancer ◽

3D Monte Carlo ◽

Element Method

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Optimisation of hybrid energy harvesting using finite element method based on vibration excitation

Progress in Industrial Ecology An International Journal ◽

10.1504/pie.2018.10018043 ◽

2018 ◽

Vol 12 (3) ◽

pp. 284

Author(s):

Nik Nurul Husna Muhmed Razali ◽

Ahmad Razlan Yusoff

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Energy Harvesting ◽

Hybrid Energy ◽

Vibration Excitation ◽

Hybrid Energy Harvesting ◽

Element Method

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

Journal of Intelligent Material Systems and Structures ◽

10.1177/1045389x08101559 ◽

2008 ◽

Vol 20 (5) ◽

pp. 495-504 ◽

Cited By ~ 28

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.

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