City Research Online

Abstract

This contribution analyses the influence of a passive inerter-based network on the stability of the 5MW NREL FOWT with a spar-buoy foundation when the system is subjected to the specific problem of self-induced oscillations. In this work, the idea of incorporating an inerter-based network with a classic tuned mass damper (TMD) in the nacelle is explored. The main objective is to show the effectiveness of the introduced network and demonstrate its benefit in the reduction of the oscillation amplitude when self-induced instabilities occur in comparison to the model equipped with TMD-only. It was demonstrated that the inerter-based network reduces the oscillation amplitude by over 90% and assures system stability when the loss of platform damping occurs.

Publication Type:	Conference or Workshop Item (Paper)
Publisher Keywords:	FOWT, TMD, inerter, self-induced oscillations
Departments:	School of Science & Technology > Engineering

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