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A Piezoelectric Wave Energy Harvester Using Plucking-Driven and Frequency Up-Conversion Mechanism

Author

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  • Shao-En Chen

    (Department of Mechanical Engineering, National Chung Hsing University, Taichung 40227, Taiwan)

  • Ray-Yeng Yang

    (Department of Hydraulic and Ocean Engineering, National Cheng-Kung University, Tainan 70101, Taiwan)

  • Zeng-Hui Qiu

    (Department of Mechanical Engineering, National Chung Hsing University, Taichung 40227, Taiwan)

  • Chia-Che Wu

    (Department of Mechanical Engineering, National Chung Hsing University, Taichung 40227, Taiwan
    Innovation and Development Center of Sustainable Agriculture (IDCSA), National Chung Hsing University, Taichung 40227, Taiwan)

Abstract

In this study, a plucking-driven piezoelectric wave energy harvester (PDPWEH) consisted of a buoy, a gear train frequency up-conversion mechanism, and an array of piezoelectric cantilever beams was developed. The gear train frequency up-conversion mechanism with compact components included a rack, three gears, and a geared cam provide less energy loss to improve electrical output. Six individual piezoelectric composite beams were plucked by geared cam to generate electrical power in the array of piezoelectric cantilever beams. A sol-gel method was used to create the piezoelectric composite beams. To investigate PDPWEH, a mathematical model based on the Euler–Bernoulli beam theory was derived. The developed PDPWEH was tested in a wave flume. The wave heights were set to 100 and 75 mm, the wave periods were set to 1.0, 1.5, and 2.0 s. The maximum output voltage of the measured value was 12.4 V. The maximum RMS voltage was 5.01 V, which was measured by connecting to an external 200 kΩ resistive load. The maximum average electrical power was 125.5 μw.

Suggested Citation

  • Shao-En Chen & Ray-Yeng Yang & Zeng-Hui Qiu & Chia-Che Wu, 2021. "A Piezoelectric Wave Energy Harvester Using Plucking-Driven and Frequency Up-Conversion Mechanism," Energies, MDPI, vol. 14(24), pages 1-19, December.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:24:p:8441-:d:702279
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    References listed on IDEAS

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    1. Viet, N.V. & Xie, X.D. & Liew, K.M. & Banthia, N. & Wang, Q., 2016. "Energy harvesting from ocean waves by a floating energy harvester," Energy, Elsevier, vol. 112(C), pages 1219-1226.
    2. Hassan Elahi & Marco Eugeni & Paolo Gaudenzi, 2018. "A Review on Mechanisms for Piezoelectric-Based Energy Harvesters," Energies, MDPI, vol. 11(7), pages 1-35, July.
    3. Omar Farrok & Koushik Ahmed & Abdirazak Dahir Tahlil & Mohamud Mohamed Farah & Mahbubur Rahman Kiran & Md. Rabiul Islam, 2020. "Electrical Power Generation from the Oceanic Wave for Sustainable Advancement in Renewable Energy Technologies," Sustainability, MDPI, vol. 12(6), pages 1-23, March.
    4. Khan, N. & Kalair, A. & Abas, N. & Haider, A., 2017. "Review of ocean tidal, wave and thermal energy technologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 72(C), pages 590-604.
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    1. Tang, Tianyi & Li, Yunfei & Huang, Manjuan & Mei, Mingqi & Wang, Zizhao & Zha, Fusheng & Sun, Lining & Liu, Huicong, 2025. "Ultra-low-frequency and high-power Mag-Boost mechanism for ocean wave energy harvesting," Renewable and Sustainable Energy Reviews, Elsevier, vol. 213(C).

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