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Highly-coupled PZT-based vibration energy harvester for broadband applications

Abstract : This paper reports on the design and experiment of a highly-coupled piezoelectric energy harvester. Such a device is necessary to benefit from non-linear electrical techniques to improve the frequency bandwidth. A previously developed 2-degree of freedom (2-DOF) analytical model is improved with the Rayleigh method and is used to understand electromechanical interactions and for a preliminary design. As a result, we built a PZT-5A cantilever embedding a long proof mass. The tests demonstrate a strong electromechanical coupling coefficient (k²=10.2% for the 1 st mode).
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https://hal.archives-ouvertes.fr/hal-02948293
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Submitted on : Thursday, September 24, 2020 - 3:25:34 PM
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David Gibus, Pierre Gasnier, Adrien Morel, Sebastien Boisseau, Adrien Badel. Highly-coupled PZT-based vibration energy harvester for broadband applications. 9th National Days on Energy Harvesting and Storage (JNRSE) 2019, May 2019, Blois, France. ⟨hal-02948293⟩

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