Electrostatic Vibration Energy Harvester Pre-charged Wirelessly at 2.45 GHz

[摘要] This paper reports the design, fabrication and experiments of an electrostatic vibration harvester (e-VEH), pre-charged wirelessly for the first time by using an electromagnetic waves harvester at 2.4 GHz. The rectenna uses the Cockcroft-Walton voltage doubler rectifier. It is designed and optimized to operate at low power densities and provides high voltage levels: 0.5 V at 0.5 μW/cm2and 0.8 V at 1 μW/cm2The e-VEH uses the Bennet doubler as conditioning circuit. Experiments show 23 V voltage across the transducer terminal when the harvester is excited at 25 Hz by 1.5 g of external acceleration. An accumulated energy of 275 μJ and a maximum power of 0.4 μW are available for the load.

[发布机构] Université Paris-Est. ESYCOM (EA 2552), UPEM, ESIEE-Paris, CNAM, Marne-la-Vallée; F.77454, France^1;Laboratoire d'Informatique de Paris 6 (LIP6), Université Paris 6, Paris; 75005, France^2

[效力级别] 能源学

[关键词] Conditioning circuit;Doublers;High voltage level;Low Power;Maximum power;Rectenna;Vibration energy harvesters;Voltage doubler rectifier