Design,modeling and experiments of broadband tristable galloping piezoelectric energy harvester
作者机构：Engineering Research Center of Energy Saving Technology and Equipment of Thermal Energy SystemMinistry of EducationZhengzhou 450000China School of AeronauticsNorthwestern Polytechnical UniversityXi'an 710072China William G.Lowrie Department of Chemical and Biomolecular EngineeringThe Ohio State UniversityColumbusOH 43210USA Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics EngineeringCollege of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060China Institute of MechanicalProcess&Energy EngineeringHeriot-Watt UniversityEdinburgh EH 144ASUK
出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)
年 卷 期：2020年第36卷第3期
页 面：592-605页
核心收录：
学科分类：08[工学] 0807[工学-动力工程及工程热物理]
基 金：supported by the National Natural Science Foundation of China(Grants 51606171,51977196,and 11802237) China Postdoctoral Science Foundation(Grant 2019M652565)
主 题：Energy harvesting Galloping Tristable Flow induced vibrations
摘 要：Galloping based piezoelectric energy harvester is a kind of micro-environmental energy harvesting device based on flowinduced vibrations.A novel tristable galloping-based piezoelectric energy harvester is constructed by introducing a nonlinear magnetic force on the traditional galloping-based piezoelectric energy *** on Euler-Bernoulli beam theory and Kirchhoff’s law,the corresponding aero-electromechanical model is proposed and validated by a series of wind tunnel *** parametric study is performed to analyse the response of the tristable galloping-based piezoelectric energy *** results show that comparing with the galloping-based piezoelectric energy harvester,the mechanism of the tristable galloping-based piezoelectric energy harvester is more *** the increase of a wind speed,the vibration of the bluff body passes through three branches:intra-well oscillations,chaotic oscillations,and inter-well *** threshold wind speed of the presented harvester for efficiently harvesting energy is 1.0 m/s,which is decreased by 33% compared with the galloping-based piezoelectric energy *** maximum output power of the presented harvester is 0.73 mW at 7.0 m/s wind speed,which is increased by 35.3%.Compared with the traditional galloping-based piezoelectric energy harvester,the presented tristable galloping-based piezoelectric energy harvester has a better energy harvesting performance from flow-induced vibrations.
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