| Wind energy is an uncontrolled processing energy, wind energy conversion is a process by wind induced random essentially, and the parameters of wind power generation system is uncertainty, in the actual operation process, system will also meet a gust of wind, wind shear,load changes. As the wind turbine automation degree is improving, people are not only raising wind turbine reliability, but also pursuit a high wind energy utilization coefficient and output power curves. How to made the designed controller hasing strong robustness and good dynamic quality with the uncertainty parametric is a research priority. The main research contents of this paper are as follows.Firstly, this paper introduces the background and research significance of wind power generation, ang we detailed overview the wind power variable pitch technology at home and abroad research status and development trend. Then we analyzed the work principe of wind power generator. Based on the principe, we established mathematical model, This paper mainly focuses on studies of constant power above rated wind speed.Secendly, because the fan running environment is bad, operating characteristics would be changed with time’s change, system is strong nonlinear. There will be a variety of internal and external disturbance. Thereore, in controller part we presents a variable propeller pitch controller based on ADRC control theory, and, building system model in MATLAB to ensure the stability of the system and achieve the maximum power tracking.Last, in the light of the setting process is complex, it has many uncertainty problems, so we set parameters of ADRC by using artificial bee colony algorithm. But the artificial bee colony algorithm’s searching process speed is slowly, and easily falling into optimal in iterative later. This topic is about the proper improvement to bee colony algorithm.Finally, made simulation in matlab, the simulation results verify the feasibility and effectiveness. |
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