In this work, the aerodynamic performance and optimization of a vertical-axis wind turbine with high tip-speed ratio are theoretically studied on basis two-dimensional airfoil theory. By dividing rotating plane into upwind downwind areas, relationship among angle attack, azimuth, pitch angle, is derived using quasi-steady model, loads then obtained. applying polynomial approximation to function...

This paper is concerned with bump-less transfer of parametrized disturbance observer 1 based controller (DOBC) with Individual Pitch Control (IPC) strategy for full load operation of wind 2 turbine. Aerodynamic cyclic loads are reduced by tuning multivariable DOBC with the objective 3 to reduce output power fluctuation, tower oscillation and drive-train torsion. Furthermore tower 4 shadow and w...

Nacelle based LIDAR (Light detection and ranging) systems provide preview information of wind disturbances at various distances in front of a wind turbine. Preliminary work towards this objective [1] has shown that the predictive knowledge of the rotor effective wind speed can be used to improve the speed regulation by a predictive feedforward update to the collective pitch feedback controller,...

In a wind energy conversion system (WECS), changing the pitch angle of turbine blades is typical practice to regulate electrical power generation in full-load regime. Due turbulent nature and large variations mean speed during day, rotary elements WECS are subjected significant mechanical stresses fatigue, resulting conceivably failures higher maintenance costs. Consequently, it imperative desi...

Wind is arguably the most promising source of sustainable energy. Moreover, recent developments in wind turbine technology have achieved significant cost reductions in extracting energy from wind. The main reason for this has been the application of innovative and effective control strategies. Over time, turbine designs have focused on reducing the overall cost of energy by either maximizing en...

In this paper, the voltage and frequency control of an isolated self-excited induction generator, driven by wind turbine, is developed with emphasis on nonlinear auto regressive moving average (NARMAL2) based on neural networks approach. This has the advantage of maintaining constant terminal voltage and frequency irrespective of wind speed and load variations. Two NARMA L2 controllers are used...

The interline power flow controller (IPFC) is a concept of the FACTS controller for series compensation which can inject a voltage with controllable magnitude and phase angle among multi lines. This paper proposes a novel IPFC-Based Damping Neuro-control scheme using PSO for damping oscil‌la‌t‌i‌o‌ns in a power system to improve power system stability. The add‌i‌tion of a supplementary controll...

High performance and reliability are required for wind turbines to be competitive within the energy market. To capture their nonlinear behavior, wind turbines are often modeled using parameter-varying models. In this paper we design and compare multiple linear parameter-varying (LPV) controllers, designed using a proposed method that allows the inclusion of both faults and uncertainties in the ...