Abstract

A finite element model is proposed for a galloping based piezoelectric energy harvester (GPEH) with an inclined square prism. The absence of any numerical model to capture the effects of inclinations of the bluff body on the performance of GPEH system necessitate the present study. The proposed model is solved in MATLAB environment and validated using the available experimental data. Dynamic stability analysis of the system is done at various vertical inclinations. A substantial decrease in power generation is noticed with the increment of the forward inclination angle. Again, large backward inclinations reduce the power output but perform well compared to forward inclinations. The present work aims to enhance the probability of power generation (GPEH system) in extreme natural flow conditions with negligible structural damage.

摘要

提出了一种基于倾斜方棱镜的舞动式压电能量收集器（GPEH）的有限元模型。由于缺乏任何数值模型来捕捉钝体倾斜对 GPEH 系统性能的影响，因此本研究有必要进行。所提出的模型在 MATLAB 环境中求解，并使用可用的实验数据进行验证。系统的动态稳定性分析是在各种垂直倾角下进行的。随着前倾角的增加，发电量显着下降。同样，大的向后倾斜会降低功率输出，但与向前倾斜相比表现良好。目前的工作旨在提高极端自然流动条件下发电（GPEH 系统）的可能性，并且结构损坏可以忽略不计。