Wind Power Generation System Based On Adaptive Fuzzy Sliding Mode Control Theory

As the earth’s environmental pollution and the deepening of non-renewable energyexploitation in use, clean and renewable energy called–wind energy, into the currentconcern about the object of study of new energy. The research and development on windenergy resources and use effectively, not only ease the global environment crisis, but alsofor the production and life of the people has made a great contribution to energy demand.In recent decades, experts around the world constantly for wind energy development andutilization of new ideas, and achieved many significant achievements, but for wind energyutilization scheme has been a hot research topic in the field of wind power, for there aremany innovative article appeared, appeared a lot of valuable wind power project. In thisarticle from predecessors outstanding wind power based on the article also put forwardnew ideas, with a view to wind power generation to contribute to the cause, specific ideasas follows:Firstly, combined with the structure of world energy resources development andchanges as well as the characteristics of wind energy wind power, expounds theadvantages and disadvantages of wind energy resource development and the significanceof the study of. The article focuses on the rated wind speed when running over the pitchangle control of doubly-fed wind power generation system and the maximum wind energycapture problem.Secondly, in view of the wind power generation system above rated wind speedoperation of the pitch control problem based on the state observer, sliding mode controltheory to design a new sliding mode controller. The control scheme has two observers, oneused for the estimation of wind speed fluctuation signal interference; another forobservation when the wind speed fluctuation caused by the wind wheel rotor speedfluctuation interference. On the stability of pitch control with the traditional sliding modecontroller is designed in this paper the contrast can be seen, with an observer sliding modecontroller can not only control the buffeting, also make wind turbine in the above ratedwind speed stage of the pitch control become more safe and reliable. Through the simulation analysis, proves that the control strategy is reasonable and the robustness of thecontroller.Finally, on how to realize the doubly-fed wind power generation system withmaximum wind energy capture problem, based on the stator field oriented vector controlprinciple and fuzzy sliding mode variable structure control theory, is proposed based onfuzzy gain adjustment switch sliding mode control maximal wind energy capture program.The wind power system to carry on characteristic analysis, and establishes correspondingmathematical model, using the stator field oriented vector control principle to realize themotor output active power and reactive power of the decoupling control, based on thefuzzy sliding mode control principle to realize the speed control of wind power systemanti interference and the maximum power point tracking speed and stability, to realize theoptimization of wind energy capture. The simulation verified effectiveness of the control scheme.