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Conference Papers Year : 2022

Exploring the power-limit of multi-modes multi-electrodes vibration energy harvesters

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Abstract

In this article, we propose a model for multi-modes multi-electrodes piezoelectric energy harvester, and study its dynamics when associated with an electrical interface. We show that a multi-modes harvester allows to overcome the traditional power limit defined for single-mode harvesters, thanks to the effect of the second mode on the first one. We investigate this phenomenon with a resistive load, both theoretically and experimentally, for a piezoelectric energy harvester made with an inverted mass and four pairs of piezoelectric electrodes. Multi-modes resonances allow to fully exploit the potential of multi-modes energy harvesters, and open ways to design large bandwidth large power density energy harvesters.
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Dates and versions

hal-03718683 , version 1 (09-07-2022)

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Adrien Morel, David Gibus, Adrien Badel. Exploring the power-limit of multi-modes multi-electrodes vibration energy harvesters. 2022 IEEE Wireless Power Week Conference (WPW 2022), Jul 2022, Bordeaux, France. pp.126-131, ⟨10.1109/WPW54272.2022.9853955⟩. ⟨hal-03718683⟩

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