Triboelectret-based aeroelastic flutter energy harvesters

[摘要] This paper highlights some experimental results on several electrostatic membranes tested in a wind tunnel between 0 and 20m.s-1for airflow energy harvesting. The main idea is to use the aeroelastic behavior of thin flexible films to induce simultaneously the capacitance variations and the polarization required by the triboelectric/electrostatic conversion. This technology provides thin and flexible devices and avoids the issue of electrets discharge. Our prototypes (2) allowed a quick startup (from 3ms-1), an electrical power-flux density from 0.1μW.cm-2to 60μW.cm-2. In order to complete the energy harvesting chain, we have used a wireless sensor with temperature and acceleration measures coupled to a low power transmission (Bluetooth Low Energy) with reception on a smartphone.

[发布机构] Univ. Grenoble Alpes, Grenoble; F-38000, France^1;CEA, Leti, Minatec Campus, 17 rue des Martyrs, Grenoble; F-38054, France^2;Univ. Grenoble Alpes G2ELab, Grenoble; F-38000, France^3

[效力级别] 能源学

[关键词] Aeroelastic behavior;Aeroelastic flutter;Bluetooth low energies (BTLE);Capacitance variation;Electrical power;Electrostatic membrane;Energy Harvester;Low power transmissions