Study on mirror-image rotating piezoelectric energy harvester

被引：30
作者：
Yu, Gang [1 ]
He, Lipeng [1 ]
Zhou, Jianwen [1 ]
Liu, Lei [1 ]
Zhang, Bangcheng [1 ]
Cheng, Guangming [2 ]
机构：
[1] Changchun Univ Technol, Sch Mechatron Engn, Changchun 130012, Jilin, Peoples R China
[2] Zhejiang Normal Univ, Inst Precis Machinery, Jinhua 321004, Zhejiang, Peoples R China
来源：
RENEWABLE ENERGY | 2021年 / 178卷
基金：
中国国家自然科学基金;
关键词：
Piezoelectric; Axial Bernoulli beam; Energy harvesting; The magnetic coupling; WIND; DESIGN; BEAM;
D O I：
10.1016/j.renene.2021.06.103
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A mirror-image rotating piezoelectric energy harvester is proposed, and it can adapt to 2.8 m/s - 13.6 m/s wind speed. It is arranged by the mirror image of two piezoelectric elements, so it has multiple resonant frequencies. The multiple resonant frequencies make the bandwidth of the energy harvester be broadened. The force applied on the piezoelectric beam is aperiodic and an evaluable analytical model is established based on Fourier series and superposition principle. The influence of the system parameters on the piezoelectric beam is deduced by the Bernoulli beam formula of axial direction, and a prototype is made for experiment and application. The results show that when the distance between the two magnets is kept at 15 mm, the torsion angle of the blades is 15 degrees, three blades are selected, and the height of each blade is 50 mm, the power generation effect is optimal, and the power can reach 12.5 mW. Under the optimal power, it only takes 100s to charge the capacitor of 220 mu F to 15V, the prototype can directly power 98 light emitting diodes (LEDs) and make the calculator work. This technology can also be extended for harvesting water energy. (C) 2021 Elsevier Ltd. All rights reserved.
引用
收藏
页码：692 / 700
页数：9
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