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 Uc1 and Uc2, an empirical formula was obtained about the critical speed Uc1. The open circuit voltage and power were measured. The device can generate 794 µW output power with 30 kΩ resistor in a wind of speed 20m/s, power density is 139 µW/cm3.
A Miniaturized Piezoelectric Wind Flutter Generator
2012
4 Seiten
Aufsatz (Konferenz)
Englisch
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