The motor speed control strategy of wind power system based on MRAS method

This Paper describes the principle and the adaptive model reference adaptive methods,based on the characteristics of doubly-fed wind generator design of a stator currents and rotor currents as state variables of the adaptive stator observer is derived using Lyapunov stability theory. The recognition rate of speed. By solving a bilinear matrix inequality, has been a constant adaptive observer gain matrix, making the state observer, including zero in the symmetry, including the range is large enough to remain stable, thus ensuring the system can accurately identify speed, it is Achieved good speed sensorless maximum power tracking under control.