Journal of the Korean Physical Society

Korean Physical Society (한국물리학회)
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A High Efficient Piezoelectric Windmill using Magnetic Force for Low Wind Speed in Wireless Sensor Networks

  • Yang, Chan Ho (Department of Electrical engineering, Hanyang University) ;
  • Song, Yewon (Department of Electrical engineering, Hanyang University) ;
  • Jhun, Jeongpil (Department of Electrical engineering, Hanyang University) ;
  • Hwang, Won Seop (Department of Electrical engineering, Hanyang University) ;
  • Hong, Seong Do (Department of Electrical engineering, Hanyang University) ;
  • Woo, Sang Bum (Department of Electrical engineering, Hanyang University) ;
  • Sung, Tae Hyun (Department of Electrical engineering, Hanyang University) ;
  • Jeong, Sin Woo (Department of Mechanical engineering, Hanyang University) ;
  • Yoo, Hong Hee (Department of Mechanical engineering, Hanyang University)
  • Received : 2018.11.15
  • Accepted : 2018.11.27
  • Published : 2018.12.30
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Abstract

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).

Keywords

Acknowledgement

Supported by : Korea Institute of Energy Technology Evaluation and Planning (KETEP)

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