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Study on the energy capture spectrum of a two-body hinged-raft wave energy converter

Author

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  • Han, Zhi
  • Jin, Siya
  • Greaves, Deborah
  • Hann, Martyn
  • Shi, Hongda

Abstract

Wave energy converters (WECs) of the hinged-raft type offer flexible arrangements and can be further applied in arrays. This study employs a numerical model to investigate the energy capture spectrum (ECS) of a two-body hinged-raft WEC under random waves utilizing the open-source simulation software WEC-Sim. The model explores in detail the combined effects of random wave parameters and WEC parameters, including the power take-off (PTO) damping coefficient, PTO stiffness coefficient, and horizontal hinge position, on the ECS. The findings revealed that the hinged-raft WEC is highly sensitive to the average wave period and adaptable to varying wave heights. Optimal energy capture under conditions of varying wave heights can be achieved by adjusting a specific PTO coefficient. These findings underscore the complex response of the two-body hinged-raft WEC to wave parameters and emphasize the importance of understanding these sensitivities and adaptabilities to optimize the WEC system, enhance efficiency, and promote its application in arrays.

Suggested Citation

  • Han, Zhi & Jin, Siya & Greaves, Deborah & Hann, Martyn & Shi, Hongda, 2024. "Study on the energy capture spectrum of a two-body hinged-raft wave energy converter," Energy, Elsevier, vol. 304(C).
    • Handle: RePEc:eee:energy:v:304:y:2024:i:c:s0360544224018310
    DOI: 10.1016/j.energy.2024.132057
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