A Miniaturized Piezoelectric Wind Flutter Generator

Xing Qiang Zhao; Zhi Yu Wen; Zhi Gang Du

doi:10.4028/www.scientific.net/KEM.503.71

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 503A Miniaturized Piezoelectric Wind Flutter...

A Miniaturized Piezoelectric Wind Flutter Generator

Abstract:

A novel miniaturized piezoelectric wind flutter generator is proposed which consisted of a flexible beam and a PZT cantilever. The working principle is based on flexible beam flutter, which can amplify the PZT cantilever vibration. A prototype was tested in a wind tunnel. It is found that there are three behavior states with wind speed increasing, and flutter behavior takes place when wind speed varies between the critical wind speed U_c₁ and U_c₂, an empirical formula was obtained about the critical speed U_c₁. The open circuit voltage and power were measured. The device can generate 794μW output power with 30kΩ resistor in a wind of speed 20m/s, power density is 139μW/cm³.

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Periodical:

Key Engineering Materials (Volume 503)

Pages:

71-74

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.503.71

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Online since:

February 2012

Authors:

Xing Qiang Zhao, Zhi Yu Wen, Zhi Gang Du

Keywords:

Flexible Beam, Piezoelectric, Wind Flutter Generator, Wind-Induced Vibration

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