scholarly journals Mitigation of Wind Turbine/Vortex Interaction Using Disturbance Accommodating Control

2003 ◽  
Author(s):  
M M Hand
Keyword(s):  
Wind Turbine ◽  
Vortex Interaction ◽  
Disturbance Accommodating Control

scholarly journals Active Control of Edgewise Vibrations in Wind Turbine Blades Using Stochastic Disturbance Accommodating Control

2017 ◽  
Author(s):  
Cong Cong
Keyword(s):  
Wind Turbine ◽  
Unbiased Estimator ◽  
Turbine Blades ◽  
Minimum Variance ◽  
Aerodynamic Load ◽  
Unknown Input ◽  
Linear Quadratic ◽  
Minimum Variance Unbiased Estimator ◽  
Stochastic Disturbance ◽  
Disturbance Accommodating Control

Vibrations of blades and tower have important impact for wind turbine. This paper presents a active controller design to suppress blade edgewise vibrations under aerodynamic load and gravitational load.Treating the sum of aerodynamic load input in edgewise direction and gravitational load as unknown disturbance input,a stochastic disturbance accommodating control(SDAC) approach is proposed to design a controller which it utilizes a minimum-variance unbiased estimator(MVUE) to estimate both state and unknown input. The stability analysis proved that the proposed SDAC is bounded in mean square.In order to verify the performance of the minimum-variance unbiased estimator and the proposed SDAC, numerical simulations using Matlab/Simulink have been carried out for the National Renewable Energy Laboratory 5-MW wind turbine.Under the different circumstance which exists the random process and measure noise and noise free. It is shown that the estimation value by MVUE can tracking the real state and unknown input. The results are also compared to the traditional linear quadratic regulator(LQR) and show that the proposed stochastic disturbance accommodating control scheme can further reduce displacement in edgewise vibrations direction and the control strategy is more effective than the LQR.

scholarly journals Vortex interaction in the wake of a two- and three-bladed wind turbine

2020 ◽  
Vol 1669 ◽  
pp. 012027
Author(s):  
Jan Bartl ◽  
Thomas H. Hansen ◽  
W. Ludwig Kuhn ◽  
Franz Mühle ◽  
Lars Sætran
Keyword(s):  
Wind Turbine ◽  
Vortex Interaction

scholarly journals An experimental study on the effects of winglets on the tip vortex interaction in the near wake of a model wind turbine

Wind Energy ◽  
2020 ◽  
Vol 23 (5) ◽  
pp. 1286-1300 ◽  
Author(s):  
Franz Mühle ◽  
Jan Bartl ◽  
Thomas Hansen ◽  
Muyiwa Samuel Adaramola ◽  
Lars Sætran
Keyword(s):  
Experimental Study ◽  
Wind Turbine ◽  
Tip Vortex ◽  
Vortex Interaction ◽  
Near Wake

Research on Loads Control of Wind Turbine Based on Disturbance Accommodating Control

2012 ◽  
Vol 522 ◽  
pp. 838-841
Author(s):  
Guo Yu Hu ◽  
Wen Lei Sun ◽  
Ji Zhe Hai ◽  
Yan Xu
Keyword(s):  
Wind Turbine ◽  
State Space ◽  
High Speed ◽  
Control Design ◽  
Maximum Power ◽  
Pi Control ◽  
Low Speed ◽  
Pitch Control ◽  
Disturbance Accommodating Control ◽  
Simulation Results

This paper uses modern control based on DAC control to numerically simulate a 1.5MW wind turbine. Through linearized modeling of 1.5MW wind turbine, this paper illustrates state-space control design and simulation for a 1.5MW wind turbine. This paper emphasizes on the use of DAC control to alleviate loads when the turbine is operating at maximum power. Loads diagrams of 1.5MW wind turbine including generator, low-speed shaft and high-speed shaft are obtained. The simulation results show that the collective pitch control based on DAC has certain effects on load alleviation compared to PI control.

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