Summary

Dynamic cables are used to connect offshore, floating wind turbines to upstream networks. To withstand continuous motions from water currents, designs with corrugated metallic sheaths and double wire armour are favoured for enhanced fatigue performance. Their safe and economic operation relies on accurate current rating, linking electromagnetic losses to heat dissipation in surroundings. This paper proposes a fully coupled current rating model, tailored to dynamic cables with corrugated sheaths. A three-dimensional, electromagnetic model accounting for sheath corrugation and double wire armouring is developed, employing the

Finite Element Method. The losses computed feed a reviewed thermal model with regard to cable interior. Computational Fluid Dynamics (CFD) analysis, accounting for the actual fluid flow and heat transfer in the gap formed between the cable and bend stiffener, is deployed for the cable exterior. The proposed model is evaluated against existing methods and used in parametric studies on sheath, armour, and gap design, demonstrating conditions where higher, yet thermally compliant, current ratings are achievable and providing guidance for optimised dynamic cable design in floating offshore wind.

Additional informations

Publication type Session Materials
Reference B1_12570_2026
Publication year
Publisher CIGRE
Country Greece
Study committees
File size 1 MB
Price for non member 30 €
Price for member 30 €

Authors

CHATZIPETROS Dimitrios - Hellenic Cables Greece; BITSI Konstantina - Hellenic Cables Greece; GKITSOS Dimitrios - Hellenic Cables Greece; PARISSIS Panagiotis - Hellenic Cables Greece; NEGINHAL Abhijit - Hellenic Cables Greece; SAKKAS Nikolaos Panagioti - Hellenic Cables Greece; KANAS Vasileios - Hellenic Cables Greece; I. CHRYSOCHOS Andreas - Hellenic Cables Greece

Current rating in dynamic cables with corrugated sheath and double wire armour