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This paper presents the modeling and characterization of the tower shadow effects using a wind turbine emulator in a laboratory environment. In particular, the downwind wind turbines are considered here as their tower shadow effects are more significant compared to the upwind counterpart. Simulation and experimental results have shown that the wind speed deficit due to this nonideal effect is significant...
This paper aims to give an overview of the recent development and benefits of model predictive control in wind turbines and its future potential. For a modern large wind turbine, the main objective of control is to maximise the power production while maintaining the fatigue loads to be minimal. With such multiple objectives, a multivariable system and actuators constraints the popular PI controller...
In many instances it is desirable for wind turbine to produce less power than is available in the wind. In such instances, one can balance between the strictness of the wind turbine power reference following and the reduction of the wind turbine structural loading. This paper investigates how wind turbine structural loads may be reduced through appropriate changes (i.e., small deviations) in wind...
A novel model predictive (MPC) approach for individual pitch control of wind turbines is proposed in this paper. A repetitive wind disturbance model is incorporated into the MPC prediction. As a consequence, individual pitch feed-forward control action is generated by the controller, taking “future” wind disturbance into account. Information about the estimated wind spatial distribution one blade...
In China, the wind power is expanding very quickly. We examine a specific real wind farm in China and analyze the WRF (Weather Research and Forecasting) model forecasts with different physical configurations and spatial resolutions. The model short-term wind speed predictions for February 2008 are compared with a real data collected in a met tower in the wind farm at 10-min sampling rate. In our case...
The dynamic characteristics of wind turbine generator tower are studied using the aerodynamics and structural dynamics theories, the mathematical model and the structure model of the tower are established. The numerical simulation method is used to simulate the turbulence flow of the wind, the turbulence model is customed in ANSYS. The 32 bands frequency and vibration mode are analyzed and the wind...
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