Disturbance Observer Based Robust Control Design of Variable Speed Wind Turbine

摘要

This paper investigates the design of a robust control for two mass model (2-MM) of a variable speed wind turbine (VSWT). The VSWT is a class of nonlinear system with a high degree of uncertainty of irregular wind speed. The uncertain behaviour of wind speed is directly unmeasurable due to the high cost of sensors. Thus, the proposed control strategy is designed on the basis of disturbance observer which avoids the construction of inverse operator leads to the problem of singularity. The closed-loop 2-MM VSWT system stability is established as asymptotically stable. The simulation results reveal the performance and robustness of the proposed control algorithm for 2-MM VSWT system.