Conceptual monopile and tower sizing for the IEA Wind Task 37 Borssele reference wind farm

Abstract This paper explores the preliminary design of support structures for IEA Wind Task 37 reference wind farm at Borssele site III and IV. The study looks two different methods that might be used within larger system optimization ( i.e. lay-out, electrical systems, etc. ). first consists a scaling tool scales detailed according to rated power, water depth, hub height rotor diameter. second is physics-based approach relies on WISDEM® tool. research compares results these both tower monopile 10-MW 15-MW turbines range sea depths (25 m, 30 35 40 m). tools yield very similar in terms base diameter, structure natural frequency mass. WISDEM then also investigate sensitivity top forces, wave conditions soil conditions. It shown forces dominate design. In general, large diameter can carry additional costs associated with manufacturing transportation requirements. Thus, concluded trade-off between mass quantifies effect reduction increase structural