Journal of the Korean Physical Society

, Volume 60, Issue 2, pp 230–234

Characterization of a high-power piezoelectric energy-scavenging device based on PMN-PT piezoelectric single crystals

  • S. E. Moon
  • S. -K. Lee
  • Y. -G. Lee
  • K. M. Kim
  • Y. -S. Yang
  • W. S. Yang
  • J. Kim
Article

DOI: 10.3938/jkps.60.230

Cite this article as:
Moon, S.E., Lee, S.K., Lee, Y.G. et al. Journal of the Korean Physical Society (2012) 60: 230. doi:10.3938/jkps.60.230
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Abstract

In this paper, we present the calculations and the results for vibration-energy-scavenging performances based on a piezoelectric single-crystal beam. Using the measured mechanical damping ratio and electro-mechanical coupling coefficient of a novel cantilever structure device, we calculated the output performances and compared them with the measured results. A device based on a bimorph cantilever structure with a proof mass was designed to have a natural resonance frequency of about 60 Hz, and the energy-scavenging capability of piezoelectric single crystal was measured. The results showed that several tens of AC volts and a few milliwatts power were achieved under a 0.1 grms vibration condition. Also using this device and a commercial power management circuit, we performed Li-ion battery charging experiment.

Keywords

Vibration-energy-scavengingPiezoelectricCantilever

Copyright information

© The Korean Physical Society 2012

Authors and Affiliations

  • S. E. Moon
    • 1
  • S. -K. Lee
    • 1
  • Y. -G. Lee
    • 1
  • K. M. Kim
    • 1
  • Y. -S. Yang
    • 1
  • W. S. Yang
    • 1
  • J. Kim
    • 1
  1. 1.Electronics and Telecommunications Research InstituteDaejeonKorea