Finite element modeling of piezoelectric energy harvesters

P. H. Wu; Y. C. Shu

doi:10.1117/12.2044347

9 March 2014 Finite element modeling of piezoelectric energy harvesters

P. H. Wu, Y. C. Shu

Proceedings Volume 9057, Active and Passive Smart Structures and Integrated Systems 2014; 90571D (2014) https://doi.org/10.1117/12.2044347
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

This article reports a novel finite element model of piezoelectric energy harvesters accounting for the effect of nonlinear interface circuits. The idea is to replace the energy harvesting circuit in parallel with the parasitic piezoelectric capacitance by an equivalent load impedance. This approach offers many advantages. First, the model itself can be implemented conveniently in commercial finite element softwares. Second, it directly provides system-level designs on the whole without resorting to circuit solvers. Third, the extensions to complicated structures such as array configurations are straightforward. The proposed finite element model is validated by considering the case of an array system endowed with the standard, parallel-/series-SSHI (synchronized switch harvesting on inductor) interfaces. Good agreement is found between simulation results and analytic estimates.

Citation Download Citation

P. H. Wu and Y. C. Shu "Finite element modeling of piezoelectric energy harvesters", Proc. SPIE 9057, Active and Passive Smart Structures and Integrated Systems 2014, 90571D (9 March 2014); https://doi.org/10.1117/12.2044347

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available