Design and experimental study of a novel type water-filled submerged flexible bag wave energy converter

Xinhui Chen, Jianfeng Wei, Songwei Sheng, Wensheng Wang, Kunlin Wang, Yaqun Zhang and Zhenpeng Wang

Renewable Energy, 2023, vol. 218, issue C

Abstract: As a kind of flexible membrane structure, the flexible bag-type wave energy converter (WEC) is currently in the conceptual development stage. This paper presents a novel type of water-filled submerged flexible bag WEC that has successfully generated electricity in a laboratory environment. Experimental studies have been conducted to investigate the hydrodynamic response of the flexible bag and the optimal resistance damping of the power take-off (PTO). The experimental results show that the average displacement of the PTO and power output are nonlinear for different wave heights. Furthermore, the capture width ratio (CWR) of the WEC varies depending on the wave period. The optimal resistance damping for this physical model has been determined to be 80 Ω. These findings can serve as a validation for future numerical simulations, and additional experimental studies will be carried out to optimize the structure of the WEC and enhance its energy conversion efficiency.

Keywords: WEC (wave energy converter); Flexible bag; Energy conversion performance; PTO (power take-off); Experimental study (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:218:y:2023:i:c:s0960148123012442

DOI: 10.1016/j.renene.2023.119329

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