A New Piezoelectric Bimorph Energy Harvester Based on the Vortex-Induced-Vibration Applied in Rotational Machinery
| Autor: | Gongbo Zhou, Zhencai Zhu, Hao Benliang, Zhixiang Li, Chaoquan Tang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Wind power Materials science business.industry Acoustics Rotational speed 02 engineering and technology Piezoelectricity Kármán vortex street Computer Science Applications Vibration 020901 industrial engineering & automation Electricity generation Control and Systems Engineering Vortex-induced vibration Electrical and Electronic Engineering business Voltage |
| Zdroj: | IEEE/ASME Transactions on Mechatronics. 24:700-709 |
| ISSN: | 1941-014X 1083-4435 |
| DOI: | 10.1109/tmech.2019.2892387 |
| Popis: | An innovative wind-induced energy harvester utilizing a piezoelectric bimorph with a pulling strip was designed based on Karman vortex street theory to collect wind energy from a rotating machinery for powering some devices. A mathematical model was initially established for the model force analysis, and the voltage generated by the piezoelectric bimorph were calculated. The stress distribution on the piezoelectric bimorph was also examined to prevent the piezoelectric material from cracking. A series of experiments were conducted according to the results of the numerical analysis. Both the numerical analysis and the experiments demonstrate that: first, rotation speed is the most important factor that affects the power generation capacity of the piezoelectric bimorph, and with a suitable installing angle, an output power of 1 mW can be easily acquired when the rotation speed exceeds 140 r/min; and, second, choosing an appropriate installing angle can increase the power generation capacity more effectively than rectifying the diameter of the cylindrical obstacle. |
| Databáze: | OpenAIRE |
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