Analytical model for nonlinear piezoelectric 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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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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Topology optimization of piezoelectric energy harvesting devices considering static and harmonic dynamic loads

Advances in Engineering Software ◽

10.1016/j.advengsoft.2012.07.008 ◽

2012 ◽

Vol 53 ◽

pp. 45-60 ◽

Cited By ~ 25

Author(s):

Jin Yee Noh ◽

Gil Ho Yoon

Keyword(s):

Topology Optimization ◽

Energy Harvesting ◽

Dynamic Loads ◽

Piezoelectric Energy Harvesting ◽

Piezoelectric Energy ◽

Energy Harvesting Devices

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

Journal of Intelligent Material Systems and Structures ◽

10.1177/1045389x18806398 ◽

2018 ◽

Vol 30 (2) ◽

pp. 323-332 ◽

Cited By ~ 1

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.

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