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Hydrodynamic analysis of a novel multi-buoy wind-wave energy system

Author

Listed:
  • Li, Yanni
  • Yan, Shiqiang
  • Shi, Hongda
  • Ma, Qingwei
  • Li, Demin
  • Cao, Feifei

Abstract

Hybrid wind-wave systems combining the wave energy converters (WECs) with offshore wind turbines (OWTs) is a promising way to enhance the power production and improve the sea space utilization. In this paper, a novel hybrid wind-wave conceptual system, in which a multi-buoy WEC is integrated with a fixed monopile OWT, is proposed. This is the first concept utilizing multi-buoy WECs and is distinguished from existing hybrid wind-wave systems with a fixed monopile OWT, which integrate a single oscillating water column or a heaving point absorber. To characterize the hydrodynamics associated with the proposed system in operational wave conditions with different directionalities, a potential flow solver with an appropriate power take-off (PTO) model is applied. The results demonstrate a significant buoy-buoy and buoy-monopile hydrodynamic interaction, suggesting that the existing hydrodynamic characteristics for the wind-wave system with a single buoy WEC may not be applicable to the new system. More importantly, the power performance of the present system is proven to be better than the corresponding single-buoy wind-wave system, as being quantitatively assessed by the newly-defined evaluation index within the range of the consideration of this paper.

Suggested Citation

  • Li, Yanni & Yan, Shiqiang & Shi, Hongda & Ma, Qingwei & Li, Demin & Cao, Feifei, 2023. "Hydrodynamic analysis of a novel multi-buoy wind-wave energy system," Renewable Energy, Elsevier, vol. 219(P1).
    • Handle: RePEc:eee:renene:v:219:y:2023:i:p1:s0960148123013927
    DOI: 10.1016/j.renene.2023.119477
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