A dual system piezoelectric energy harvester for harvesting low frequency ocean energy

Abstract

This paper presents a dual system hybrid piezoelectric energy harvester (DS-PEH) for harvesting ocean energy. The lever module can amplify the external load; the dual system hybrid power generation is adopted, increasing the output power over the single power generation mode. The experiment examines the impact of two variables on various systems. At a flow rate of 18000 L/h, PEH-1 generates 36.98 μW with a 15 mm rubber band and 2 MΩ resistance, while PEH-2 produces 28.09 μW with a 20 mm magnet spacing and 1 MΩ resistance. The two systems can light up the light-emitting diode (LED) separately and have the potential to power small equipment. Moreover, DS-PEH can be expanded into large-scale offshore power generation systems by integrating multiple prototypes according to different working conditions.