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Exploiting Elastically Supported Masses in Cantilever for Resonance Frequencies Down-Shifted Vibration Energy Harvester

Author

Listed:
  • Hai Wang

    (School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China)

  • Bin Li

    (School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China)

  • Yan Liu

    (School of Electro-Mechanical Engineering, Xidian University, Xi’an 710071, China)

  • Min Zhang

    (School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China)

  • Wei Zhao

    (School of Electro-Mechanical Engineering, Xidian University, Xi’an 710071, China)

  • Hongbo Qin

    (School of Electro-Mechanical Engineering, Xidian University, Xi’an 710071, China)

Abstract

This paper presents a piezoelectric vibration energy harvester (PVEH) with resonance frequencies shifted down by elastically supported masses. The added elastic supporters can diminish the equivalent stiffness of the whole structure, leading to an evident decline in the resonance frequency of the cantilever body. Meantime, a new resonant peak is generated in the lower frequency range. The resonant frequency of the proposed PVEH can be easily adjusted by replacing the rubber band of the elastic support. The constructed configuration is theoretically investigated and experimentally verified. Compared with the conventional cantilever, the proposed device achieved a 46% decrease in resonance frequency and 87% enhancement in output power.

Suggested Citation

  • Hai Wang & Bin Li & Yan Liu & Min Zhang & Wei Zhao & Hongbo Qin, 2019. "Exploiting Elastically Supported Masses in Cantilever for Resonance Frequencies Down-Shifted Vibration Energy Harvester," Energies, MDPI, vol. 12(11), pages 1-8, June.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:11:p:2207-:d:238596
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    References listed on IDEAS

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    1. Yildirim, Tanju & Ghayesh, Mergen H. & Li, Weihua & Alici, Gursel, 2017. "A review on performance enhancement techniques for ambient vibration energy harvesters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 71(C), pages 435-449.
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