| At present,the study of yaw control strategy of wind turbine is mainly focused on the maximum power tracking of single wind turbine,which can not take into account the influence of wake on the power of downstream wind turbine.The paper analyzes the effect of upstream wind turbine yaw control on downstream wind power Study on the Influence of Unit Power.In this paper,the characteristics of natural winds are analyzed and modeled,and the statistical characteristics of wind speed are introduced.The definition and measurement method of wind direction are introduced.Then,the wind turbine model is established and the aerodynamic characteristics of the wind turbine are summarized according to the momentum theorem.Finally,three semi-empirical wake models are introduced,and the calculation process of each model is described and analyzed in detail.Then,the yaw control system of the wind turbine is described in detail from three aspects: the hardware and software composition of the yaw system of the wind turbine and the yaw control strategy,and the stability of the aerodynamic basis.Secondly,the center shift of the wind turbine is studied systematically.Programming Calculation in MATLAB Based on the Theory of Sweep Offset.The relationship between the parameters of the wake shift is obtained,and the relationship between the parameters is analyzed.Finally,the wind turbine model is established in the Bladed software,and the wind turbines with two diameters of 7 times the diameter of the wind turbines are used by the previously calculated wake center offset.Under certain wind direction,the wind turbine is active Yaw control after a certain angle,the characteristics of the two units of power simulation,and the simulation results were analyzed and summarized.Finally,a new yaw control strategy is designed by simulation results. |
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