Active heave compensation of floating wind turbine installation using a catamaran construction vessel

Journal article (2021)

Authors

Zhengru Ren Norwegian University of Science and Technology (NTNU)
Roger Skjetne Norwegian University of Science and Technology (NTNU)
Amrit Shankar Verma Norwegian University of Science and Technology (NTNU), Aerospace Manufacturing Technologies - Aerospace Engineering , Centre for Research-based Innovation on Marine Operations (SFI MOVE)
Zhiyu Jiang University of Agder
Zhen Gao Norwegian University of Science and Technology (NTNU)
Karl Henning Halse Norwegian University of Science and Technology (NTNU)
Research Group
Aerospace Manufacturing Technologies (Aerospace Engineering) (TU Delft)
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Published Date

2021

Language

English

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Faculty

Aerospace Engineering

Department

Aerospace Structures & Materials

Research Group

Aerospace Manufacturing Technologies

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.

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