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http://dx.doi.org/10.3795/KSME-B.2010.34.6.623

Use of Piezoelectric Effect in Portable Loadless Wind-Power Source for Ubiquitous Sensor Networks  

Chang, Hyung-Kwan (Dept. of Mechanical Engineering, Sogang Univ.)
Kim, Dae-Joong (Dept. of Mechanical Engineering, Sogang Univ.)
Park, Jung-Yul (Dept. of Mechanical Engineering, Sogang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.34, no.6, 2010 , pp. 623-628 More about this Journal
Abstract
This paper presents a wind-power-driven portable power source based on piezoelectric effect. Positive piezoelectric effect is one of efficient and widely used mechanisms for converting mechanical energy to electrical energy. However, for this mechanism, a periodic mechanical stress with a high frequency, as in the case of AC, has to be exerted; such stress cannot be exerted by the natural wind in the environment. The natural wind has a constant velocity with slow and irregular variations, as in the case of DC. In this paper, we propose a novel and simple mechanism to convert mechanical energy into electrical energy. The DC-like wind flow is passed through a propeller to convert it to an AC-like wind flow; the resultant AC-like periodic flow induces vibrations in a piezoelectric cantilever, thereby, generating electrical power. This system is expected to be one of practical solutions for wireless energy supply to ubiquitous sensor networks (USNs).
Keywords
Wind Power; Energy Harvesting; Piezoelectric; Micropower Source;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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