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

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

Energy, 2024, vol. 298, issue C

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.

Keywords: Ocean waves; Piezoelectric energy harvesting; Oscillating float buoy; Wave energy converter (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:298:y:2024:i:c:s0360544224011204

DOI: 10.1016/j.energy.2024.131347

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