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Communication dans un congrès Année : 2016

Design and test of a Bennet's doubler device with mechanical switches for vibrational energy harvesting

Résumé

In this work, we demonstrate that the use of self-synchronized mechanical switches in replacement of diodes into electrostatic vibration energy harvesters (e-VEH) can lead to better power generation. Indeed, mechanical switches have the advantage of no leakage current and no threshold voltage. As a proof of concept, we use the Bennet's doubler electrostatic generator. The proposed e-VEH is composed of two variable capacitors triggered by a central electrode taken as an inertial mass. Ambient vibrations induce inertial forces on the central electrode, as a result a voltage doubling is obtained at each operating cycle. The mechanical switches are directly fixed to the moving electrode. In addition, no dedicated pre-charge is required: the system starts with ambient electrical charges. The device is fabricated and tested under harmonic motion. A comparison between the proposed design and those using diodes under the same operating conditions shows an experimental direct increase of the harvested electrical power of around 28%.
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Origine : Publication financée par une institution
Licence : Paternité - Pas d'utilisation commerciale - Pas de modification - CC BY 4.0
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Dates et versions

hal-01769270, version 1 (26-06-2023)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification - CC BY 4.0

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M. Ouanes, Yingxian Lu, H. Samaali, Philippe Basset, F. Najar. Design and test of a Bennet's doubler device with mechanical switches for vibrational energy harvesting. 16th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS’16), Dec 2016, Paris, France. ⟨10.1088/1742-6596/773/1/012038⟩. ⟨hal-01769270⟩
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Dernière date de mise à jour le 26/06/2024
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