A broadband electromagnetic energy harvester with a coupled bistable structure

13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Zhu, D.^1 ; Beeby, S.P.^1

Electronics and Electrical Engineering Group, Electronics and Computer Science, University of Southampton, SO17 1BJ, United Kingdom^1

关键词: Bistable structures;    Electromagnetic vibrations;    Energy Harvester;    Excitation amplitudes;    Excitation force;    Linear energy;    Output power;    White noise excitation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/476/1/012070/pdf
DOI  :  10.1088/1742-6596/476/1/012070

来源: IOP

【 摘 要 】

This paper investigates a broadband electromagnetic energy harvester with a coupled bistable structure. Both analytical model and experimental results showed that the coupled bistable structure requires lower excitation force to trigger bistable operation than conventional bistable structures. A compact electromagnetic vibration energy harvester with a coupled bistable structure was implemented and tested. It was excited under white noise vibrations. Experimental results showed that the coupled bistable energy harvester can achieve bistable operation with lower excitation amplitude and generate more output power than both conventional bistable and linear energy harvesters under white noise excitation.