Study Method of Pitch-Angle Control on Load and the Performance of a Floating Offshore Wind Turbine by Experiments

Le Quang Sang, Qing’an Li, Takao Maeda (), Yasunari Kamada, Duc Nguyen Huu, Quynh T. Tran () and Eleonora Riva Sanseverino
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Le Quang Sang: Institute of Energy Science—Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi 10072, Vietnam
Qing’an Li: CAS Laboratory of Wind Energy Utilization, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Takao Maeda: Division of Mechanical Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu 514-8507, Mie, Japan
Yasunari Kamada: Division of Mechanical Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu 514-8507, Mie, Japan
Duc Nguyen Huu: Faculty of Energy Technology, Electric Power University, 235 Hoang Quoc Viet, Hanoi 11355, Vietnam
Quynh T. Tran: Institute of Energy Science—Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi 10072, Vietnam
Eleonora Riva Sanseverino: Department of Engineering, University of Palermo, 90128 Palermo, Italy

Energies, 2023, vol. 16, issue 6, 1-18

Abstract: Offshore wind energy is a renewable energy source that is developing fast. It is considered to be the most promising energy source in the next decade. Besides, the expanding trend for this technology requires the consideration of diversified seabeds. In deep seabeds, floating offshore wind technology (FOWT) is needed. For this latter technology, such as for conventional WT, we need to consider aspects related to performance, aerodynamic force, and forces during operation. In this paper, a two-bladed downwind wind turbine model is utilized to conduct experiments. The collective pitch and cyclic pitch angle are adjusted using swashplated equipment. The fluid forces and moments acting on the rotor surface are measured by a six-component balancing system. By changing the pitch angle of the wind turbine blades, attempts are made to manage the fluid forces generated on the rotor surface. Under varied uniform wind velocities of 7, 8, 9, and 10 m/s, the effect of collective pitch control and cyclic pitch control on the power coefficient and thrust coefficient of FOWT is then discussed. Furthermore, at a wind speed of 10 m/s, both the power coefficient and loads are investigated as the pitch angle and yaw angle change. Experimental results indicate that the combined moment magnitude can be controlled by changing the pitch-angle amplitude. The power coefficient is adjusted by the cyclic pitch-angle controller when the pitch-angle phase changes. In addition, the thrust coefficient fluctuated when the pitch angle changed in the oblique inflow wind condition.

Keywords: floating offshore wind turbine; load reductions; collective pitch control; cyclic pitch control; wind tunnel experiment (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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