Power enhancement of broadband piezoelectric energy harvesting using a proof mass and nonlinearities in curvature and inertia

Vibration energy harvesting: A review

“…In the past few years, a lot of work has been done to generate effective power output by introducing improvements such as innovative design to reduce the weight and size of the harvester, an addition of proof mass to increase strain, and introducing nonlinearity of the system. 101,208,209 In today's world, the major challenge is to find out a more reliable and effective way to generate more voltage output from a low frequency range. Most of the latest research studies have focused on improving the conversion efficiency of EH by using different configurations and energy removal techniques.…”

“…However, this type of system is more complex and cost-inefficient. 50,101 In the future, emphasis should be given to harvest a significant amount of energy from raindrop, sound wave, flow-induced vibration, vortex-induced vibration, etc. Future research goal should be to develop more effective storing circuits and to find out more new materials for achieving better performance.…”

“…98 To improve frequency flexibility and power output, a tip mass or magnet can be integrated into the cantilever structure. [99][100][101][102] Because of the tip mass or tip magnet, both beam and piezoelectric oscillate resulting in imbalanced charges of piezomaterial. So, net positive and negative charges appear on opposite faces of the piezopatch and cause potential difference across its opposite faces.…”

Nonlinear stability analysis of piecewise actuated piezoelectric microstructures

“…Dai et al [29] have analyzed forced vibrations of cantilever nanoswitches by considering nonlinearities in curvature and inertia. Moreover, the effect of an attached particle on the power enhancement of broadband smart energy harvesting has been studied with consideration of both nonlinear inertia and nonlinear curvature by Firoozy et al [30]. Recently, Fang et al [31] have focused on size-dependent rotating FG microbeams by considering the geometric nonlinearity.…”

Design and Analysis of MEMS Based Aluminum Nitride (AlN), Lithium Niobate (LiNbO<sub>3</sub>) and Zinc Oxide (ZnO) Cantilever with Different Substrate Materials for Piezoelectric Vibration Energy Harvesters Using COMSOL Multiphysics Software

“…[1]. In recent decades, energy harvesting from ambient vibrations of natural environments, such as air flows and human motions, which are obtainable universally and permanently, has attracted much attention of many researches [2]. The investigations in vibration-based energy harvester using piezoelectric transducers have been attracting intensive attention in the research sector of sustainable energy [3].…”