Micro-power design of a fully autonomous energy harvesting circuit for arrays of piezoelectric transducers

^1* Department of Mechanical Engineering, Karpagam Academy of Higher Education, Coimbatore, 641021, India
² Department of Mechanical Engineering, Karpagam College of Engineering, Coimbatore, 641032, India.
³ Assistant Professor, Department of Mechanical Engineering, CMR College of Engineering & Technology, Hyderabad, Telangana, India
⁴ Department of Structurals Techniques Engineering, College of Technical Engineering, The Islamic University, Najaf, Iraq; Department of Structurals Techniques Engineering, College of Technical Engineering, The Islamic University of Al Diwaniyah, Al Diwaniyah, Iraq; Department of Structurals Techniques Engineering, College of Technical Engineering, The Islamic University of Babylon, Babylon, Iraq
⁵ Department of IT, GRIET, Hyderabad, Telangana, India

^* Corresponding author:sivanantham.a@kahedu.edu.in

Abstract

Piezoelectric energy harvesting is a promising technology due to its ability to convert vibrations into electricity with a simple design and adaptable sizing. This technology allows us to capture energy from everyday movements and power devices. The size of the harvester significantly impacts its weight, how it’s made, the amount of power it generates, and where it can be used.While a single piezoelectric element can harvest energy, an array of them combined with a vibration source can produce more power. However, the material properties of commonly used piezoelectrics, like Lead Zirconate Titanate (PZT), can limit efficiency. To improve this, additional circuits with rectifier bridges and capacitors are used.