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Communication Dans Un Congrès Année : 2018

Autonomous electrostatic generator for energy harvesting applications under inertial load

Résumé

Vibration-based energy harvesters have been extensively studied and investigated to harvest the energy produced by environmental mechanical vibration sources as mean to produce low electrical energy, thereby supplying low-power sensors and actuators. Different devices have been proposed as energy harvesters, cantilevers-based geometries have been pursued frequently in the literature. Here, we propose the geometry of an elastomeric circular membrane coupled with an electret (soft electrostatic generator) with a central proof mass. By soliciting the designed device around its resonance frequency of 14Hz with an acceleration of 0.4g for a mass of 9.5g, the system produced an average electric power of 24μW for an optimal resistance of 150MΩ. An analytical study developed closely with a finite element simulation with Comsol® allowed to validate the obtained experimental results, suggesting that this approach can be used as a tuning method to develop other geometrical shapes and conceive large-scale devices for vibration energy harvesting applications.
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hal-01760768 , version 1 (06-04-2018)

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  • HAL Id : hal-01760768 , version 1

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C. Lagomarsini, A. Kachroudi, Skandar Basrour, C. Jean-Mistral, A. Sylvestre. Autonomous electrostatic generator for energy harvesting applications under inertial load. Electroactive Polymer Actuators and Devices (EAPAD), SPIE Smart Structures and Materials (Nondestructive Evaluation and Health Monitoring) 2018, Mar 2018, Denver, United States. ⟨hal-01760768⟩
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