Research On Maximum Power Point Tracking Technology Of Wind Power System Based On MATLAB

Energy is an important material basis for human survival and development, along with thedevelopment of human society,the demand for energy continues to grow.At the same time, theenergy structure is also changing.Due to dwindling reserves of traditional fossil fuels, especiallythe use of fossil fuels for the planet warming and environmental pollution, for the developmentof low-carbon economy, countries around the world save the develop the use of renewableenergy sources as energy development strategy, to achieve sustainable energy development.Aswind are rich reserves, renewable, widely distributed and almost no pollution,has become animportant direction for renewable energy development.Wind is a type of random, explosive, uncertain energy, to achieve maximum power outputat different wind speeds for the wind turbine generator,to improve the utilization of wind energy,wind power generation system should be operating at maximum power all the time.So theresearch of wind power maximum power point tracking technology has a very importantpractical significance.In this paper,maximum power point tracking technology based on doubly-fed asynchronouswind turbine has been researched.Firstly,this paper introduces the basic principle of maximum power point tracking andcontrol technology, established the model of wind speed and wind turbines, presents a dynamicmodel of wind turbine, wind speed model are simulated with Matlab.Secondly, it gives the space vector model of doubly-fed induction generator, the networkside and rotor side of power converter model and its control method, and experimental research.Thirdly,through the analysis of the power of doubly-fed induction generator, this paperproposes a method of maximum power point tracking for variable speed constant frequencydoubly-fed wind turbine,and simulation results verify the effectiveness of the proposed method.Fourthly,this paper proposes a prediction method based on adaptive gray short-termforecasting method for wind power output,and the simulation results verify the effectiveness ofthe new algorithmFinally,this paper set up a maximum power point tracking algorithm model based onadaptive grey forecasting method, and simulated experiment, the results prove the effectivenessof the proposed method.