Analytical and Experimental Studies of Double Elastic Steel Sheet (DESS) Vibration Energy Harvester System

Abstract

This study provides a double elastic steel sheet (DESS) piezoelectric energy harvester system, in which the vibration generated by the deformation and clap of two elastic steel sheets is assisted by a piezo patch to generate electric energy. The system is combined with energy storage equipment to propose a complete solution forgreen energy integration. This study buildsexperimentallyon the model of the proposed system to explore its voltage, power output and energy collection efficiency. This study also builds atheoretical model of a nonlinear beam with the piezo patch, including the piezoelectric coupling coefficient and current equation. This nonlinear problem is analyzed by the method of multiple scales (MOMS). The system frequency response wasobserved using fixed points plots. The perturbation technique and numerical method wereused to mutually validate the experimental results; the concept of DESS vibration energy harvester (DESS VEH) is proved feasible. In order to prolong the lifetime of the clapping of DESS piezo patch, a camber protector design is proposed. The findings show that the power-generating effect is best when the piezo patch is placed at the peak of the third mode of the DESS system, and the high camber protector is used to generate electric energy.

Analysis of Double Elastic Steel Wind Driven Magneto-Electric Vibration Energy Harvesting System

“…The use of wind and magnetic force applied on the DES system also has a wider range of practical applications than a simple external load from a shaker, which was used in refs. [17][18][19]. The novel concept and practical application have been proved feasible in this work.…”

“…They proved that the power generation from the slap between steels is possible. Wang et al [18] designed two parallel cantilever beams to form a double elastic steel VEH (DES VEH) system. In order to achieve the perfect performance of the slap, the placement of the PZT patch is very important.…”

Enhancing Electrical Generation Efficiency through Parametrical Excitation and Slapping Force in Nonlinear Elastic Beams for Vibration Energy Harvesting

“…The maximum amplitude can be determined by means of fixed-point plots. By combining the piezoelectric coupling nonlinear beam equation (Equation (40)) with the voltage function (Equation (10)) and setting the magnitude of the external force (actuator amplitude) to 0.6, The theoretical voltage output can be calculated using the fourth-order Runge-Kutta (RK-4) method. The results are presented as response graphs of voltage versus time, as depicted in Figure 4.…”

“…Their research provides theoretical evidence that the impact effect can increase the power generation efficiency of specific materials. Around the same time, Wang and their team (Wang et al [ 10 , 11 ]) also investigated the use of impact-induced vibrations to generate electricity. They not only established a theoretical model, but also demonstrated the feasibility of the concept whereby a piezoelectric patch could generate electricity by being impacted.…”

“…They not only established a theoretical model, but also demonstrated the feasibility of the concept whereby a piezoelectric patch could generate electricity by being impacted. Wang et al [ 10 ] designed a double-layer elastic-steel-sheet energy harvesting system comprising two parallel cantilever beams (Double Elastic Steel VEH (DES-VEH)). Wang et al [ 11 ], on the other hand, examined the energy conversion efficiency of transverse vibrations and mutual impacts of a group (two pieces) of Fixed–fixed beams.…”