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

Michael K. McWilliam*, Anand Natarajan, Nicolo Pollini, Katherine Dykes, Garrett E. Barter

*Corresponding author for this work

    Research output: Contribution to journalConference articleResearchpeer-review

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    This paper explores the preliminary design of the support structures for the IEA Wind Task 37 reference wind farm at the Borssele site III and IV. The study looks at two different design methods that might be used within larger wind farm system design optimization (i.e. lay-out, electrical systems, etc.). The first consists of a scaling tool that scales a detailed design according to the rated power, water depth, hub height and rotor diameter. The second is a physics-based optimization approach that relies on the WISDEM® design tool. This research compares the results of these two methods for the design of both the tower and monopile of the IEA 10-MW and 15-MW reference wind turbines at a range of sea depths (25 m, 30 m, 35 m, 40 m). The two tools yield very similar results in terms of monopile base diameter, support structure natural frequency and mass. WISDEM is then used to also investigate the sensitivity of the design to the tower top forces, wave conditions and the soil conditions. It is shown that tower top forces dominate the design. In general, large diameter structures can carry additional costs associated with manufacturing and transportation requirements. Thus, the paper is concluded with a trade-off study between mass and diameter that quantifies the effect of the reduction in monopile diameter with the increase in structural mass.
    Original languageEnglish
    Article number012025
    Book seriesJournal of Physics: Conference Series
    Number of pages14
    Publication statusPublished - 2021
    EventEERA DeepWind’2021 - 18th Deep Sea Offshore Wind R&D Conference - Online event
    Duration: 13 Jan 202115 Jan 2021
    Conference number: 18


    ConferenceEERA DeepWind’2021 - 18th Deep Sea Offshore Wind R&D Conference
    LocationOnline event
    Internet address


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