Author response for "Effect of platform disturbance on the performance of offshore wind turbine under pitch control"

2019 ◽  
Author(s):  
Saeed Karimian Aliabadi ◽  
Sepehr Rasekh
Keyword(s):  
Wind Turbine ◽  
Offshore Wind ◽  
Author Response ◽  
Offshore Wind Turbine ◽  
Pitch Control

Experimental Study for SPAR Type Floating Offshore Wind Turbine With Blade-Pitch Control

2013 ◽  
Author(s):  
Toshiki Chujo ◽  
Yoshimasa Minami ◽  
Tadashi Nimura ◽  
Shigesuke Ishida
Keyword(s):  
Wind Turbine ◽  
Wind Farm ◽  
Offshore Wind ◽  
Scale Model ◽  
Offshore Wind Turbine ◽  
Experimental Proof ◽  
Pitch Control ◽  
Model Experiments ◽  
North Eastern ◽  
North Eastern Part

The experimental proof of the floating wind turbine has been started off Goto Islands in Japan. Furthermore, the project of floating wind farm is afoot off Fukushima Prof. in north eastern part of Japan. It is essential for realization of the floating wind farm to comprehend its safety, electric generating property and motion in waves and wind. The scale model experiments are effective to catch the characteristic of floating wind turbines. Authors have mainly carried out scale model experiments with wind turbine models on SPAR buoy type floaters. The wind turbine models have blade-pitch control mechanism and authors focused attention on the effect of blade-pitch control on both the motion of floater and fluctuation of rotor speed. In this paper, the results of scale model experiments are discussed from the aspect of motion of floater and the effect of blade-pitch control.

Author response for "Post‐installation adaptation of offshore wind turbine controls"

2019 ◽  
Author(s):  
Emil Smilden ◽  
Stian H. Sørum ◽  
Erin E. Bachynski ◽  
Asgeir J. Sørensen ◽  
Jørgen Amdahl
Keyword(s):  
Wind Turbine ◽  
Offshore Wind ◽  
Author Response ◽  
Offshore Wind Turbine

scholarly journals Computationally Inexpensive Approach for Pitch Control of Offshore Wind Turbine on Barge Floating Platform

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Shan Zuo ◽  
Y. D. Song ◽  
Lei Wang ◽  
Qing-wang Song
Keyword(s):  
Wind Turbine ◽  
Reducing Power ◽  
Uncertain System ◽  
Robust Adaptive Control ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Complex Load ◽  
Control Approach ◽  
Pitch Control ◽  
System Parameters

Offshore floating wind turbine (OFWT) has gained increasing attention during the past decade because of the offshore high-quality wind power and complex load environment. The control system is a tradeoff between power tracking and fatigue load reduction in the above-rated wind speed area. In allusion to the external disturbances and uncertain system parameters of OFWT due to the proximity to load centers and strong wave coupling, this paper proposes a computationally inexpensive robust adaptive control approach with memory-based compensation for blade pitch control. The method is tested and compared with a baseline controller and a conventional individual blade pitch controller with the “NREL offshore 5 MW baseline wind turbine” being mounted on a barge platform run on FAST and Matlab/Simulink, operating in the above-rated condition. It is shown that the advanced control approach is not only robust to complex wind and wave disturbances but adaptive to varying and uncertain system parameters as well. The simulation results demonstrate that the proposed method performs better in reducing power fluctuations, fatigue loads and platform vibration as compared to the conventional individual blade pitch control.

Adaptive Individual Blade Pitch Control to Reduce Platform Pitch Motion of a Floating Offshore Wind Turbine: Preliminary Study

2014 ◽  
Author(s):  
Kaman Thapa Magar ◽  
Mark J. Balas
Keyword(s):  
Wind Turbine ◽  
Control Signal ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Floating Offshore Wind Turbine ◽  
Pitch Motion ◽  
Pitch Control ◽  
Preliminary Study

This paper presents the preliminary study on damping of platform pitch motion of floating offshore wind turbine using adaptive individual blade pitch control. The platform pitch displacement is measured and used to derive the signal to actuate pitch of each blade independently which tries to damp the platform pitch motion. This independent blade pitch control signal is then combined with collective blade pitch control signal which is responsible for regulating the generator speed. The performance of proposed controller is compared with the baseline PID collective pitch controller and adaptive collective pitch controller.

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