Platform yaw drift in upwind floating wind turbines with single-point-mooring system and its mitigation by individual pitch control

Abstract. This work demonstrates the feasibility of an individual pitch control strategy based on nacelle yaw misalignment measurements to mitigate platform drift in upwind floating offshore wind turbines, which is caused by vertical moment produced rotor. acts degree freedom, being great importance systems that have low stiffness. Among them, single-point-mooring platforms are one most important ones. During recent years, several turbine concepts with been proposed, can theoretically dispense mechanism due their ability rotate and align environmental conditions (weather-vaning). However, this paper it proven overcomes orienting ability, causing drift. With intention reducing induced response a turbine, applied, introduces counteracting moment. The validated numerical simulations using 5 MW National Renewable Energy Laboratory (NREL) mounted version DeepCwind OC4 demonstrate therefore maintain alignment rotor wind.