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Multi-pillar piezoelectric stack harvests ocean wave energy with oscillating float buoy

Author

Listed:
  • Du, Xiaozhen
  • Li, Pengkai
  • Li, Zihao
  • Liu, Xiaotong
  • Wang, Wenxiu
  • Feng, Quanheng
  • Du, Lixiang
  • Yu, Hong
  • Wang, Jianjun
  • Xie, Xiangdong
  • Tang, Lihua

Abstract

Piezoelectric Energy Harvesting (PEH) has emerged as a promising alternative to traditional batteries for self-powered sensors. This paper proposed a multi-pillar piezoelectric stacks oscillating float wave energy harvesting device that utilizes a unique rack, pinion, and cam system to convert the heaving motion of the float into a unidirectional rotation. Subsequently, the cam actuates a linkage rod, driving multiple piezoelectric stack pillars to generate electrical energy. The innovative cam mechanism introduces frequency upconversion to improve the efficiency of power generation in conjunction with piezoelectricity. A theoretical methodology is also derived and validated with simulation and experimental model tests to characterize the output power. The results demonstrate that the system attains a peak output voltage of 32 V and a power output of 3.5 mW when utilizing 10 piezoelectric translation units connected in parallel. This achievement is facilitated by the oceanic force generated by wave motion, which exerts a force of 500 N over a wave period of 3 s. The sustainable energy solutions are developed for remote sensor applications in marine environments, offering potential advancements in the field of autonomous and self-powered sensing systems.

Suggested Citation

  • Du, Xiaozhen & Li, Pengkai & Li, Zihao & Liu, Xiaotong & Wang, Wenxiu & Feng, Quanheng & Du, Lixiang & Yu, Hong & Wang, Jianjun & Xie, Xiangdong & Tang, Lihua, 2024. "Multi-pillar piezoelectric stack harvests ocean wave energy with oscillating float buoy," Energy, Elsevier, vol. 298(C).
    • Handle: RePEc:eee:energy:v:298:y:2024:i:c:s0360544224011204
    DOI: 10.1016/j.energy.2024.131347
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