Engineering a motion-enhanced tri-stable hybrid energy converter for capturing low-frequency wave energy

Yuhao Liu, Ying Hao, Chen Wang, Gaolei Li, Gui-Lin Wen and Siu-Kai Lai

Energy, 2025, vol. 322, issue C

Abstract: This paper presents a new design concept of incorporating a multi-stable nonlinear system with speed amplification designed for a hybrid-based low-frequency wave energy converter (WEC). The design features a tri-stable nonlinear, array-type electromagnetic generator paired with a conveyor belt-style, grating-structured, freestanding triboelectric generator. A roller-belt mechanism can increase the relative speed between the oscillator and translators of the hybrid WEC by a factor of two. The combination of the array magnet and speed amplification also enables the generation of voltage frequency in the electromagnetic generator. The mechanical and electrical characteristics of the fully integrated WEC are assessed through both experimental measurements and numerical calculations. Experimental results show that the designed WEC operates effectively within a frequency range of 0.1–2 Hz, achieving a peak power output of ∼311 mW at 2 Hz under an acceleration of 0.25 g. Ultimately, a capacitor charging experiment carried out in a wave environment shows that the power supply is sufficient for powering small electronic devices.

Keywords: Speed amplification; Tri-stable nonlinearity; Electromagnetic−triboelectric hybrid approach; Roller-belt mechanism; Frequency-up approach (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544225012253
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:322:y:2025:i:c:s0360544225012253

DOI: 10.1016/j.energy.2025.135583

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().