海上漂浮式风浪混合能源转换装置的功率性能

Abstract The development of offshore wind and wave energy offers a crucial pathway to achieving net-zero carbon targets. This paper proposes a novel floating offshore wind and wave hybrid energy converter system, which comprises a Windfloat floating offshore wind turbine (FOWT) and an array of rocker-arm type wave energy converters (WECs). We examine the impact of coupling effects, neglecting motion response, on power performance of the hybrid system with three different WEC array configurations using a fully coupled aero-hydro-servo-elastic-mooring simulation framework. Comparing power and q -factors across 62 wave conditions reveals that the WEC array composed of six buoys provides the best performance of the configurations considered. Furthermore, the comparison of coupling amplification factors indicates that coupling effects render the wind-wave hybrid system more suitable for sea states with peak spectral periods exceeding 6 s. The power comparison results show that the number of buoys and their coupling to the FOWT have negligible effect on power output of the wind turbine. Moreover, Coulomb power take-off (PTO) damping is found to be more suitable than linear PTO damping for the rocker-arm type WEC idealized as a single buoy. Annual energy production (AEP) of the hybrid system is estimated to be slightly lower than that of the separate system for a typical candidate site involving short-period waves in the Yellow Sea, China.