Active disturbance rejection power control for a floating wind turbine

With sight on maximizing the amount of energy that can be extracted, by a wind turbine, from the wind, this article solves the maximum power point tracking problem for a permanent magnet synchronous generator-based horizontal wind turbine connected to the electrical grid. A three-phase back-to-back converter, which allows a decoupling between the electrical grid and the generator, is employed as an interphase between the wind turbine and the utility grid. Based on the mathematical model in the synchronous reference frame and taking advantage of the differential flatness property the system exhibits, controllers based on the active disturbance rejection methodology are designed, in this work, to track the curve of maximum extracted power from the wind and manage the generated electricity into the grid. At the same time, the phase angle of the electricity generated is synchronized with the phase angle of the electrical grid. Numerical simulations are performed to support the controllers presented in this work.

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Optimal power tracking control of a hydraulic wind turbine based on active disturbance rejection control methodology

Transactions of the Canadian Society for Mechanical Engineering ◽

10.1139/tcsme-2018-0013 ◽

2020 ◽

Vol 44 (3) ◽

pp. 461-470 ◽

Cited By ~ 1

Author(s):

Chao Ai ◽

Chao Wu ◽

Fan Zhao ◽

Xiangdong Kong

Keyword(s):

Wind Turbine ◽

Disturbance Rejection ◽

Input Power ◽

System Stability ◽

Active Disturbance Rejection Control ◽

Pump Speed ◽

Wind Speeds ◽

Active Disturbance Rejection ◽

Disturbance Rejection Control ◽

Displacement Pump

Power point tracking (PPT) is one of the necessary functions of the wind turbine to optimize the use of wind energy. PPT is a condition that needs to be completed after the grid is connected, which can be achieved by tracking the optimal rotation speed of the output of the wind turbine and the optimum torque and power output of the hydraulic system. Based on a fixed displacement pump speed control, an optimal PPT strategy with the active disturbance rejection control (ADRC) method is proposed, and the control objective is to maximize the energy conversion of the system. This paper sets out to (i) establish a hydraulic wind turbine grid-connected affine nonlinear mathematical model, based on the ADRC method and a fixed displacement pump speed output control, (ii) design a nonlinear tracking differentiator and extended state observer and nonlinear state error feedback control law, and (iii) achieve optimal PPT under different wind speeds. Simulations were model by MATLAB/Simulink, where the system inputs signals of different wind speeds and analyses control system stability and robustness. Simulation results show that the input power was greater with a fixed displacement pump speed .

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Switching Control of Wind Turbine Sub-Controllers Based on an Active Disturbance Rejection Technique

Energies ◽

10.3390/en9100793 ◽

2016 ◽

Vol 9 (10) ◽

pp. 793 ◽

Cited By ~ 7

Author(s):

Yancai Xiao ◽

Yi Hong ◽

Xiuhai Chen ◽

Wenjian Huo

Keyword(s):

Wind Turbine ◽

Disturbance Rejection ◽

Switching Control ◽

Active Disturbance Rejection

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Enhancement of transient stability of DFIG wind turbine using active disturbance rejection controller

2014 9th IEEE Conference on Industrial Electronics and Applications ◽

10.1109/iciea.2014.6931127 ◽

2014 ◽

Author(s):

M. A. Chowdhury ◽

A. H. M. Sayem ◽

K. S. Islam ◽

W. X. Shen

Keyword(s):

Wind Turbine ◽

Disturbance Rejection ◽

Transient Stability ◽

Active Disturbance Rejection

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Robust Active Disturbance Rejection Control Approach to Maximize Energy Capture in Variable-Speed Wind Turbines

Mathematical Problems in Engineering ◽

10.1155/2013/396740 ◽

2013 ◽

Vol 2013 ◽

pp. 1-12 ◽

Cited By ~ 12

Author(s):

Horacio Coral-Enriquez ◽

John Cortés-Romero ◽

Germán A. Ramos

Keyword(s):

Wind Turbine ◽

Control Strategy ◽

Disturbance Rejection ◽

Optimal Trajectory ◽

Control Technique ◽

Power Coefficient ◽

Variable Speed ◽

Control Approach ◽

Energy Capture ◽

Active Disturbance Rejection

This paper proposes an alternative robust observer-based linear control technique to maximize energy capture in a 4.8 MW horizontal-axis variable-speed wind turbine. The proposed strategy uses a generalized proportional integral (GPI) observer to reconstruct the aerodynamic torque in order to obtain a generator speed optimal trajectory. Then, a robust GPI observer-based controller supported by an active disturbance rejection (ADR) approach allows asymptotic tracking of the generator speed optimal trajectory. The proposed methodology controls the power coefficient, via the generator angular speed, towards an optimum point at which power coefficient is maximum. Several simulations (including an actuator fault) are performed on a 4.8 MW wind turbine benchmark model in order to validate the proposed control strategy and to compare it to a classical controller. Simulation and validation results show that the proposed control strategy is effective in terms of power capture and robustness.

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