Operating Frequency Prediction of Piezoelectric DC–DC Converters

Pereira, Lucas de Araujo; Morel, Adrien; Touhami, Mustapha; Lamorelle, Théo; Despesse, Ghislain; Pillonnet, Gaël

doi:10.1109/tpel.2021.3115182

Cited by 10 publications

(1 citation statement)

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“…4). This phenomenon shows that the influence of higher resonance modes can be positive, even though these influences are often seen as negative in the piezoelectric-based conversion [16] and piezoelectric energy harvesting literatures [4] [5]. Such phenomenon allows to expand the power limit of multi-modes structures with littleto-no increase of the harvester's volume, which may lead to the design of harvesters exhibiting higher power densities.…”

Section: Resultsmentioning

confidence: 98%

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

Morel

Gibus

Badel

2022

2022 Wireless Power Week (WPW)

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In this article, we propose a model for multimodes 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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Section: Resultsmentioning

confidence: 98%