Modeling and experimental verification of a pendulum-based low-frequency vibration energy harvester

Fan, Kangqi1; Wang, Chenyu1; Zhang, Yan1; Guo, Jiyuan1; Li, Rongchun1; Wang, Fei2; Tan, Qinxue1

2023-07-01

10.1016/j.renene.2023.04.136

RENEWABLE ENERGY   影响因子和分区

0960-1481

1879-0682

The pendulum-plucked rotational energy harvester (PP-REH) can realize efficient exploitation of low-frequency vibrations by transforming them to one-way rapid spin of a rotor via a pendulum and a plectrum. A route is conceived in this study to construct the plectrum that can achieve sufficiently large forward stiffness for spinning the rotor and a very small backward stiffness for making the frictional resistance as low as possible. An electromechanical coupling model of the PP-REH is also proposed and verified by experiment to describe the PP-REH dynamic responses. The simulations reveal that the shift of the optimal frequency of the PP-REH with the applied vibration magnitude is due to the large-angle swing of the pendulum. The change of the optimal load resistance is caused by the fact that the power generation unit of the PP-REH is excited indirectly by the exerted vibration, making the electrical damping effect on the PP-REH responses discernible. The proposed electromechanical model can not only predict the PP-REH output performance but also reveal the intriguing phenomena found in the PP-REH dynamics. The model thus can facilitate the design of efficient PP-REHs to achieve high electric outputs from pervasive low-frequency vibrations.

Vibration energy harvester Swing motion Low -frequency vibration Electromechanical model

SCI ; EI

英语

通讯

National Natural Science Founda- tion of China[52077159]

Science & Technology - Other Topics ; Energy & Fuels

Green & Sustainable Science & Technology ; Energy & Fuels

WOS:000991423500001

PERGAMON-ELSEVIER SCIENCE LTD

20231814033829

Electric loads ; Electromechanical coupling ; Energy harvesting ; Pendulums ; Stiffness

Energy Conversion Issues:525.5 ; Electric Power Systems:706.1 ; Materials Science:951

ENGINEERING

Web of Science

1.Xidian Univ, Sch Mechanoelect Engn, Xian 710071, Peoples R China
2.Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China

Fan, Kangqi,Wang, Chenyu,Zhang, Yan,et al. Modeling and experimental verification of a pendulum-based low-frequency vibration energy harvester[J]. RENEWABLE ENERGY,2023,211:100-111.

Fan, Kangqi.,Wang, Chenyu.,Zhang, Yan.,Guo, Jiyuan.,Li, Rongchun.,...&Tan, Qinxue.(2023).Modeling and experimental verification of a pendulum-based low-frequency vibration energy harvester.RENEWABLE ENERGY,211,100-111.

Fan, Kangqi,et al."Modeling and experimental verification of a pendulum-based low-frequency vibration energy harvester".RENEWABLE ENERGY 211(2023):100-111.