重庆理工大学学报2024，Vol.38Issue(15)：227-234,8.DOI:10.3969/j.issn.1674-8425(z).2024.08.026
阵列压电式能量采集器仿真研究与实验分析
Simulation and experimental analysis of array piezoelectric energy harvester
摘要
Abstract
The piezoelectric vibration energy harvester designed based on traditional single cantilever beams suffers such pressing issues as low output electrical energy and narrow operating frequency band.To address the above issues,this paper designs an array piezoelectric vibration energy harvester and conducts simulation research and experimental analysis.First,a theoretical analysis is made on the working principle of piezoelectric cantilever beams,and the formulas for output power and output voltage are derived by building an equivalent circuit model.Then,COMSOL simulation analysis is made on the piezoelectric vibration energy harvester from the perspectives of statics and vibration modes,and the basic vibration characteristics of the harvester are obtained.Finally,an experimental prototype is made and an experimental platform is built,and the performance tests of series and parallel outputs are conducted on the prototype.Our results show its use is limited as the operating frequency band is not expanded compared to a single piezoelectric cantilever beam though the output power of the shared mass block piezoelectric array structure is improved.The maximum open circuit voltage of the series output with different mass block piezoelectric array structures is 1.79 V,with a bandwidth of 7.6 Hz.The maximum open circuit voltage of the parallel output is 1.71 V,with a bandwidth of 8.6 Hz.However,under the same experimental environment,the maximum open circuit voltage of a single beam is 1.56 V,with a bandwidth of 2.4 Hz.Therefore,the output performance and working frequency band of the collector are improved,and the environmental adaptability is enhanced.关键词
压电效应/压电悬臂梁/振动能量/有限元仿真/阵列Key words
piezoelectric effect/cantilever beam/vibrational energy/finite element simulation/array分类
信息技术与安全科学引用本文复制引用
陈新岗,黄宇杨,马志鹏,李宁一,范益杰..阵列压电式能量采集器仿真研究与实验分析[J].重庆理工大学学报,2024,38(15):227-234,8.基金项目
重庆市教育委员会科学技术研究项目(KJZD-K202101103) （KJZD-K202101103）
重庆理工大学科研启动基金项目(2021ZDZ016) （2021ZDZ016）
重庆理工大学2023年研究生创新项目(gzlcx20233106) （gzlcx20233106）
