Adaptive nonlinear observer for wind energy conversion system involving synchronous aero-generator

Avoiding physical sensors in plant control entails cost reduction and reliability improvement. Accordingly, the state observers have been used to get the online estimates of needed states using only the electrical measurements. To overcome the drawbacks of rotor position and speed associated with the synchronous aero-generator. A high gain observer is synthesized for the online estimation of rotor fluxes, rotor speed, as well as the proposed observer, own an adaptation mechanism that provides the estimation of the generator torque and stator resistor. Only the currents and voltages are assumed to be accessible for measurements. The stability of the state observer is formally analyzed using Lyapunov tools and its performance is illustrated by simulation under MATLAB/SIMULINK environment.