Adaptive Independence Electrical Drive Pitch Control Technology Research

Along with the social productive forces is developed, the energy is demanded more and bigger by the humanity, limited reserves of the conventional energy like the coal, the petroleum and the gas , these energies accurately were the fuel of the renewable cyclical long period. But the wind power take one kind of the green energy that is gradually taken the recognition, now the wind power generation technology rapidly is developed, simultaneously capacity of the single wind turbine unceasingly is increased to cause the pitch technology rapid is developed.In the article the electrical drive pitch system is researched, now the popular pitch technology is the pitch technology of the electrical drive servo system. Is introduced the structure of the electrical drive pitch system and the basic work principle. In the article is proposed the pitch system structure of the permanent magnetism synchronization motor servo system. This article in view of includes the indefinite parameter of the PMSM to use the model reference adaptive control method is designed the control system. When the PMSM is operated the temperature of the stator is increased to cause the stator resistance value is often changed, accordingly parameter of the mathematical model is undefined, when the system is operated to cause control object is changed. The simulation result is showed to use the model reference adaptive control method to obtain the quite ideal control effect.In the article the model reference adaptive electrical pitch technology is researched, emphatically to select the principle and method of reference model is discussed in the model reference adaptive control, the model reference adaptive control system question of the based on the system input and output with the Lyapunov stability theory and the Popov super stability theory is designed. And this control system is applied in the pitch system in the MATLAB/SIMULINK software to operate the simulated analysis, the simulated result explained the model reference adaptive control method when in pitch system is included the indefinite parameter is increased the responded speed of the pitch angle, the system is had the certain robust to suppress the influence that is changed parameter of the system itself.