15th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications | |
Piezoelectric Vibration Energy Harvester Using Indirect Impact of Springless Proof Mass | |
物理学;能源学 | |
Ju, S.^1 ; Ji, C.-H.^1 | |
Department of Electronics Engineering, Ewha Womans University, Seoul, Korea, Republic of^1 | |
关键词: Average power; Electric power; External vibrations; Macro fiber composite; Parallel-connected; Piezoelectric cantilevers; Piezoelectric vibration; Proof of concept; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/660/1/012122/pdf DOI : 10.1088/1742-6596/660/1/012122 |
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来源: IOP | |
【 摘 要 】
This paper presents an impact-based piezoelectric vibration energy harvester using freely movable spherical proof mass and MFC (Macro Fiber Composite) beams as piezoelectric cantilevers. When external vibration is applied, a metal sphere moves freely along the channel and collides with both ends of the cavity, which induces the vibration of parallel- connected MFCs and generates electric power. A proof-of-concept device having the form- factor of a wristwatch has been designed and tested. Moreover, spherical proof mass made of different materials has been tested to analyze the relationship between output power, long-term reliability, and audible noise level during operation. Maximum peak-to-peak open circuit voltage of 41.2V and average power of 908.7 μW have been obtained in response to a 3g vibration at 17Hz for device with parallel-connected MFC beams.
【 预 览 】
Files | Size | Format | View |
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Piezoelectric Vibration Energy Harvester Using Indirect Impact of Springless Proof Mass | 1233KB | download |