Feedforward control for wave disturbance rejection on floating offshore wind turbines

Journal article (2020)

Authors

M. Al Student, Sowento GmbH
A. Fontanella Politecnico di Milano
D.C. van der Hoek Team Jan-Willem van Wingerden - Mechanical, Maritime and Materials Engineering
Y. Liu Team Jan-Willem van Wingerden - Mechanical, Maritime and Materials Engineering
Marco Belloli Politecnico di Milano
J.W. van Wingerden Team Jan-Willem van Wingerden - Mechanical, Maritime and Materials Engineering
Research Group
Team Jan-Willem van Wingerden (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2020 M. Al, A. Fontanella, D.C. van der Hoek, Y. Liu, M. Belloli, J.W. van Wingerden
DOI
help_outline
https://doi.org/10.1088/1742-6596/1618/2/022048
More Info
expand_more

Published Date

2020

Language

English

Faculty

Mechanical, Maritime and Materials Engineering

Department

Delft Center for Systems and Control

Research Group

Team Jan-Willem van Wingerden

Abstract

Floating offshore wind turbines allow wind energy to be harvested in deep waters. However, additional dynamics and structural loads may result when the floating platform is being excited by wind and waves. In this work, the conventional wind turbine controller is complemented with a novel linear feedforward controller based on wave measurements. The objective of the feedforward controller is to attenuate rotor speed variations caused by wave forcing. To design this controller, a linear model is developed that describes the system response to incident waves. The performance of the feedback-feedforward controller is assessed by a high-fidelity numerical tool using the DTU 10MW turbine and the INNWIND.EU TripleSpar platform as references. Simulations in the presence of irregular waves and turbulent wind show that the feedforward controller effectively compensates the wave-induced rotor oscillations. The novel controller is able to reduce the rotor speed variance by 26%. As a result, the remaining rotor speed variance is only 4% higher compared to operation in still water.