The Optimal Control Of Doubly-fed VSCF Wind Power Under The Rated Wind Speed

Firstly, the thesis introduces the structure of a wind power generation system, then, using the Matlab/m to establish a simulated model for each part of the system. It also introduces current Tip speed ratio method and Variable-step hill-climbing method and proposes a fixed wind speed as a new method of pursuing maximum wind power:the golden ratio method. Furthermore, with the simulated wind turbine model as a base, prepared search method and advanced comparative study on simulation. The result proves its superiority.At the time when the wind power generator pursues maximum power, disturbance to the electric generator is unavoidable. To counter this situation, the Fuzzy PI control method is proposed, both enabling the control device to have suitably strong Fuzzy control and high PI control precision, thereby reducing the disturbance to the wind power generator. Lastly, carrying out a simulation in comparison to PI control, the result proves its practicality.