Long-term performance estimation of the Spar–Torus-Combination (STC) system with different survival modes》.pdfVIP

Ocean Engineering 108 (2015) 716–728 Contents lists available at ScienceDirect Ocean Engineering journal homepage: /locate/oceaneng Long-term performance estimation of the Spar–Torus-Combination (STC) system with different survival modes Nianxin Ren a,c,n, Zhen Gao a,b, Torgeir Moan a,b, Ling Wan a a Center for Ship and Ocean Structures (CeSOS), Norwegian University of Science and Technology, Trondheim NO-7491, Norway b Center for Autonomous Marine Operations and Systems (AMOS) and Department of Marine Technology, Norwegian University of Science and Technology, Trondheim NO-7491, Norway c Deepwater Engineering Research Center, Dalian University of Technology, Dalian 116024, China a r t i c l e i n f o a b s t r a c t Article history: This work addresses a combined wind and wave energy concept called the Spar–Torus-Combination Received 1 May 2015 (STC) system. Two additional survival modes for the original STC system (in a survival mode with the Accepted 12 August 2015 tours locked to the spar) have been proposed, namely the submerged mode and the low power take-off (PTO) damping mode. The performance of the STC system with different modes has been investigated Keywords: based on a coupled analysis of wind–wave-induced stochastic response using the SIMO-TDHMILL code Floating wind turbine in the time domain. The energy production, structural fatigue damage and extreme responses of the STC Wave energy converter