Numerical analysis of the piezoelectric cantilever parameter properties for energy harvester Available to Purchase

Energy harvesting is significant because it provides an alternate source of electricity for electronic devices that lack access to conventional energy sources. Piezoelectric materials, on the other hand, have the ability to transform kinetic energy into electrical energy through the piezoelectric effect. Therefore, the goal of this study is to discover a piezoelectric system that can collect the most energy from the surrounding. This study concentrated on the output voltage of unimorph and bimorph types of piezoelectric cantilever beams based on their resonance frequency. Lead Zirconate Titanite (PZT) is one of important piezoelectric material that has been used in energy harvesting development as a transducer. So, PZT-5H, PZT-5A, and PZT-4 are the varieties of PZT that are being utilized in this study. The substrate material employed for the bimorph design in this study is Aluminum Nitride. Thus, by concerning the bimorph, a comparison is being made between the structure of the cantilever with and without the existence of tip mass. To define the behavior characteristics of the cantilever structure, this study is using COMSOL Multiphysics software to create a finite element model. Observing the simulation results, it is evident that the bimorph structure with a mass at the tip that employs PZT-5H as the piezoelectric layer and Aluminum Nitride as the substrate layer is the most effective design for this rectangular cantilever structure for low-frequency application of energy harvesting, with an output voltage of 6 V compared to 3 V for unimorph and 4 V for bimorph without the tip mass.