A triboelectric wind turbine for small-scale energy harvesting

[摘要] This paper deals with a rotational energy harvester including a Horizontal Axis Wind Turbine (HAWT), a cylindrical stator covered by several electrodes, and thin Teflon dielectric membranes hung on the rotor. The sliding contact of the Teflon membranes on the stator provides simultaneously large capacitance variations and a polarization source for the electrostatic converter by exploiting triboelectric phenomena. 1μW has been harvested at 4m/s; 130μW at 10m/s and 550μW at 20m/s with a 40mm device. In order to validate the energy harvesting chain, the airflow energy harvester has been connected to a power management circuit implementing Synchronous Electric Charge Extraction (SECE) to supply a wireless sensor node with temperature and acceleration measurements, transmitted to a computer at 868MHz.

[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] Capacitance variation;Charge extraction;Cylindrical stator;Dielectric membranes;Horizontal axis wind turbines;Power management circuits;Rotational energy;Wireless sensor node