C1 Connections

C1 Connections and JBO publish a Monopile Design Study

C1 Connections requested JBO to perform a comparative monopile design study for a 22 MW wind turbine generator in a water depth of 45 meters, under typical North
Sea site conditions.

The whitepaper aims to assess the impact of varying interface diameters between the monopile and the tower on the weight of the support structure. Specifically, the analysis will examine the effects
of diameter variations in the wave-loaded zone on fatigue limit state (FLS) and ultimate limit state (ULS) load levels, demonstrating their influence on potential interface connections (MP-tower and MP/TP).

The study results clearly confirm the theory that a larger diameter in the wave-loaded zone typically results into disproportionate ULS and FLS load increases for the here found dominating resonance situations. Thus, if the industry intends to solve the monopile feasibility for the future configurations by simply increasing
diameters and adding steel to the structures, a significant disproportional negative impact on the LCOE is the
result. 

“As a general principle, designing a more slender structure within the wave-loaded zone results in a
reduced total mass of the substructure and foundation.”

About C1 Connections B.V.

C1 Connections BV is a Dutch privately-owned company dedicated to developing and commercially exploiting the C1 Wedge Connection™. C1 Connections BV strives to deploy the C1 Wedge Connection™ as the future standard for highly loaded connections in off- and onshore wind projects.

Contact

For more information on the C1 Wedge Connection™, please contact:

Jasper Winkes

+31 6 27367351

winkes@c1connections.com

www.c1connections.com

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