Journal
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
Volume 73, Issue 12, Pages 1889-1894Publisher
KOREAN PHYSICAL SOC
DOI: 10.3938/jkps.73.1889
Keywords
Energy conversion; Energy harvesting; Piezoelectric materials; Wind; Wireless sensor networks
Categories
Funding
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [2018201010636A]
- Korea Evaluation Institute of Industrial Technology (KEIT) [2018201010636A] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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An innovative small-scale piezoelectric energy harvester has been proposed to gather wind energy. A conventional horizontal-axis wind power generation has a low generating efficiency at low wind speed. To overcome this weakness, we designed a piezoelectric windmill optimized at low-speed wind. A piezoelectric device having high energy conversion efficiency is used in a small windmill. The maximum output power of the windmill was about 3.14 mW when wind speed was 1.94 m/s. Finally, the output power and the efficiency of the system were compared with a conventional wind power system. This work will be beneficial for the piezoelectric energy harvesting technology to be applied to the real world such as wireless sensor networks (WSN).
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