Browse by author
Lookup NU author(s): Professor Zhiqiang HuORCiD
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
© 2025The complex external excitations and six-degree-of-freedom motion characteristics of floating platforms pose significant challenges to the design of control systems for floating offshore wind turbines. Traditional control strategies based on onshore wind turbines are inadequate for ensuring both power output stability and platform motion control in floating systems. This paper derives a linear time-invariant state-space model from a coupled dynamics model and proposes a model predictive control (MPC) strategy for torque and pitch control above rated wind speeds. Utilizing preview disturbance inputs, a dynamic optimization problem is formulated that considers system output stability, platform motion suppression, and generator thermal state regulation. Simulation results demonstrate the superiority of the proposed MPC strategy over gain-scheduling control in stabilizing output, reducing platform motion, regulating generator thermal state, and lowering control actuator loads. Additionally, the force states of floating offshore wind turbines under different control algorithms are analyzed, and the impact of motion suppression weight coefficient design on system output and platform stability is discussed, providing reference for the control design of floating wind turbines above rated wind speed.
Author(s): Liu J, Cai C, Song D, Zheng J, Guo X, Sun X, Hu Z, Li Q
Publication type: Article
Publication status: Published
Journal: Ocean Engineering
Year: 2025
Volume: 322
Print publication date: 01/04/2025
Online publication date: 29/01/2025
Acceptance date: 18/01/2025
ISSN (print): 0029-8018
ISSN (electronic): 1873-5258
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.oceaneng.2025.120451
DOI: 10.1016/j.oceaneng.2025.120451
Altmetrics provided by Altmetric
