Sustainable utilisation of natural marine resources, together with the need for reduction in the cost of the energy derived, enhances the need to combine the exploitation of offshore wind and wave energy. To decrease the initial capital investment and future operational expenses, it is necessary to implement a hybrid approach. Given the significant synergy between wind, waves, and the ocean, the use of a hybrid approach to harness offshore renewable energy would be advantageous. The hydrodynamic power performance of various arrays of heaving cone-cylinder point absorber-type wave energy converter (WEC) around both submerged tension leg platform (STLP) floating wind turbines in circular and concentric patterns is examined in the present work based on potential flow theory in the frequency domain. North Sea wave data is considered to analyse the power absorption for the various configurations of WECs surrounding the floating wind turbine platform. The study examined the influence of hydraulic power take-off (PTO) on wave power absorption for various circular and concentric arrays of WECs. A reactive damping control strategy was employed to observe the wave power capture. Further, the capture width ratio is studied to understand the utilisation of the wave crest for power capture. For most configurations, the highest wave power absorption for the reactive damping control is observed for the wave period close to 12 s.

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Performance of Hybrid TLP Wind Turbine Platform Under Power Take-Off Damping

  • J. S. Rony,
  • V. K. Srineash,
  • D. Karmakar

摘要

Sustainable utilisation of natural marine resources, together with the need for reduction in the cost of the energy derived, enhances the need to combine the exploitation of offshore wind and wave energy. To decrease the initial capital investment and future operational expenses, it is necessary to implement a hybrid approach. Given the significant synergy between wind, waves, and the ocean, the use of a hybrid approach to harness offshore renewable energy would be advantageous. The hydrodynamic power performance of various arrays of heaving cone-cylinder point absorber-type wave energy converter (WEC) around both submerged tension leg platform (STLP) floating wind turbines in circular and concentric patterns is examined in the present work based on potential flow theory in the frequency domain. North Sea wave data is considered to analyse the power absorption for the various configurations of WECs surrounding the floating wind turbine platform. The study examined the influence of hydraulic power take-off (PTO) on wave power absorption for various circular and concentric arrays of WECs. A reactive damping control strategy was employed to observe the wave power capture. Further, the capture width ratio is studied to understand the utilisation of the wave crest for power capture. For most configurations, the highest wave power absorption for the reactive damping control is observed for the wave period close to 12 s.