The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study of Optimal Driving Method for Piezoelectric Device Applications

압전소자 응용분야의 최적효율 운전연구

  • Kim, Yong-Wook (Dept. of Electrical Engineering, Tongmyong University) ;
  • Kim, Dong-Hee (Dept. of Electrical Engineering, Chonnam National University)
  • Received : 2017.08.23
  • Accepted : 2017.09.01
  • Published : 2017.10.01
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Abstract

In piezoelectric device applications, it is important to improve a system efficiency because of the low generated power. In this paper, an optimal driving method is proposed to improve a system efficiency for a piezoelectric energy harvesting system. The proposed method considers disappear energy in input capacitors and the converter efficiency according to the input voltage magnitude to minimize energy losses. Experimental results based on various energy generation cases verify that the proposed method significantly improves the system efficiency; the efficiency is approximately 9.97% higher than that of the conventional method.

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References

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