Simulation and analysis of wind turbine variable pitch torque and control system

This paper establishes a variable pitch system working force mathematical model by analyzing variable pitch wind turbine blade stress , and designs its closed-loop PID controllers combined with the actual pitch system, a fuzzy adaptive PID loop control is introduced in the variable pitch system position loop , compares with simulation torque curves which were produced by the fuzzy adaptive PID algorithm and traditional PID algorithm in the process of feathering wind turbine and adjusting pitch in the power generation used real wind turbine parameters, and shows the feasibility and superiority of Fuzzy adaptive PID algorithm.