4.6 Article

Field Evaluation of Piezoelectric Energy Harvesters on Bridge Structure

期刊

MACHINES
卷 11, 期 4, 页码 -

出版社

MDPI
DOI: 10.3390/machines11040462

关键词

energy harvesting; bridge vibration; piezoelectric; resonant frequencies; cantilever

向作者/读者索取更多资源

This study aimed to develop and evaluate vibration-based piezoelectric energy harvesters for generating power from bridge structures. New designs of multiple-degree-of-freedom cantilevers were proposed and evaluated in the laboratory and on a full-scale bridge. The potential of generating 35 V voltage outputs was found in all cantilever designs under a simple sinusoidal vibration scenario in the laboratory. Furthermore, field testing results showed that the match between the vibration frequencies of the bridge structure and the resonant frequencies of the cantilevers significantly affected the voltage output of the piezoelectric energy harvester.
This study aims to develop and evaluate vibration-based piezoelectric energy harvesters for generating power from a bridge structure. New designs of multiple-degree-of-freedom (DOF) cantilevers were proposed and evaluated in a laboratory and on a full-scale bridge. It was found that all cantilever designs showed potential of generating 35 V voltage outputs under a simple sinusoidal vibration scenario in the laboratory. Field testing results showed that the match between the vibration frequencies of bridge structure and the resonant frequencies of cantilevers significantly affected the voltage output from the piezoelectric energy harvester under moving tire loads. Through adding more DOF on the same cantilever, the voltage attenuation from peaks generated by the cantilever turned to be less significant after each load passing, leading to greater energy outputs in some cases. With adjusting the mass combination in the 3-DOF cantilever design, the voltage output and energy production reached 11.1 V and 58.2 mu J under one single loading pulse, respectively, which was higher than 9.2 V and 14.9 mu J obtained from the best scenario of 1-DOF cantilevers. The study findings indicate the potential of developing multi-band piezoelectric energy harvesters for harvesting energy from bridge vibrations.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据