Piezoelectric energy harvester converting wind aerodynamic energy into electrical energy for microelectronic application

• Main Authors: Sitharthan R, Yuvaraj S, Sanjeevikumar Padmanabhan, Jens Bo Holm‐Nielsen, Sujith M, Rajesh M, Prabaharan N, vengatesan K
• Format: Article
• Language: English
• Published: Wiley 2021-07-01
• Series: IET Renewable Power Generation
• Online Access: https://doi.org/10.1049/rpg2.12119

Abstract Piezoelectric Energy Harvesting Systems play a vital role in energizing microelectronic devices with the low‐frequency operation. Here, a novel piezoelectric energy harvesting device has been developed for low power electronic devices. The developed Piezoelectric Energy Harvesting Systems consists of a cantilever with poles projecting outwards and the cantilevers one end is connected to the wind‐catcher, and another end is connected to the torsional spring. The developed Piezoelectric Energy Harvesting Systems signifies its application in energizing microelectronic devices. The cantilever is placed inwards to the piezoelectric crystal stack. When the wind strikes, a vortex is created in the windcatcher, which oscillates the cantilever and generates stress in the piezoelectric crystal stack to develop electric energy. The output voltage obtained from the Piezoelectric Energy Harvesting Systems does not affect any input frequency of the piezoelectric crystal. The result obtained shows that the developed Piezoelectric Energy Harvesting Systems generates 120–200 eV with 2.9 × 1016–4.84 × 1016 Hz frequency considering an elementary charge unit as 40 for a variable wind flow of 4–9 m/s. This research aims to develop an efficient wind‐based Piezoelectric Energy Harvesting Systems for low powered microelectronic devices.