Research on rotor excitation neural network PID control of variable speed constant frequency wind turbine

The key of variable speed constant frequency wind turbine operating control is the rotor excitation control, This article state the double-fed generator stator magnetic field direction detection control principle, discussed the stator magnetic field localization and the rotor position definite method, The rotor excitation uses neural network PID control which realizes easily in DSP, and has developed the DSP rotor excitation control device, has conducted the double-fed generator rotor excitation neural network PID control experimental study. The test result indicated that, the double-fed generator uses the neural network PID control strategy The test result indicated that, the double-fed generator uses the neural network PID control strategy is effective, not only it can realize the active power and the reactive power independent control, but also has the good static adjustment characteristic and the dynamic characteristic.