Controller Design for Small Wind Generator with ADRC

The small wind generator is generally composed with permanent magnetism synchronic generator (PMSM) and other components, and the small wind generator is mainly employed to the single customer, hence it is important to keep the stability and the max power obtaining. The controller of it is only designed to adjust the generator and the current converter disregarding of the others. The controller for this purpose is presented in the paper and control theory is auto disturbance rejection controller (ARDC) which is a new control theory that doesn’t need the exact object model. The variation of load resistance is observed and estimated by an extended state observer, which is the core of the ADRC. So the nonlinear parts of the wind turbine can be considered as the disturbance which is estimated by an additional state. The Matlab simulink software and labsystem have been carried out and the results confirm that thedesigned controller with ADRC is satisfied.