Abstract
The application of floating wind turbines is limited by the high cost that increases with the water depth. Offshore installation and maintenance continue to consume a high percentage of the project budget. To improve the installation efficiency of the floating offshore wind turbine, a novel concept is proposed by the SFI MOVE project. Several wind turbine superstructure components are preassembled onshore and carried to the installation site by a catamaran construction vessel. Each assembly can then be installed using only one lift, and the concept is less sensitive to weather conditions. In this paper, a control algorithm of the proposed hydraulic active heave compensator system is developed using singular perturbation theory to cancel the relative motion between the spar top and gripped preassembly bottom. Closed-loop stability is proven, and the simulation results show that the installation efficiency is improved with an increase in the acceptable weather conditions.
Original language | English |
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Article number | 102868 |
Number of pages | 15 |
Journal | Marine Structures |
Volume | 75 |
DOIs | |
Publication status | Published - 2021 |
Keywords
- Floating offshore wind turbine
- Heave compensator
- Hydraulic system
- Marine operations
- Singular perturbation theory
- Wind turbine installation