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arXiv · 1903.05861

Modelling and design of highly coupled piezoelectric energy harvesters for broadband applications

D Gibus·P. Gasnier·A. Morel·S. Boisseau·A. Badel
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Abstract

This paper reports a method to design highly coupled piezoelectric energy harvesters with frequency tuning capabilities using nonlinear electrical techniques. A cantilever beam with two PMN-PT patches has been optimized thanks to both analytical modelling and Finite Element Methods (FEM). The built prototype exhibits a strong electromechanical coupling (k${}^2$=17.6%) and a figure of merit (km${}^2$Q=12.4) which allow a bandwidth corresponding to 22% of the resonant frequency value.

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D Gibus, P. Gasnier, A. Morel, S. Boisseau, A. Badel. 2019-03-14. Modelling and design of highly coupled piezoelectric energy harvesters for broadband applications. https://doi.org/10.1088/1742-6596%2F1407%2F1%2F012009

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