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Piezoelectric Wind-Energy-Harvesting Device with Reed and Resonant Cavity
Jun Ji,
Fanrang Kong,
Liangguo He,
Qingchun Guan, and
Zhihua Feng
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230026, China
(Received October 9, 2009; accepted February 12, 2010; published online May 6, 2010)
A wind-energy-harvesting device utilizing the principle of a harmonica was created. A reed in a resonant cavity vibrated efficiently with the blowing wind, and a piezoelectric element stuck on the reed generated electricity. The dimensions of the wind inlet were approximately 30×20 mm2. The device was investigated with a wind speed ranging from 2.8 to 10 m/s. An output power of 0.5–4.5 mW was obtained with a matching load of 0.46 MΩ. The energy conversion efficiency of the device could reach up to 2.4%.
URL:
http://jjap.jsap.jp/link?JJAP/49/050204/
DOI: 10.1143/JJAP.49.050204
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