Nonlinear Control of a Grid-Connected Double Fed Induction Generator Based Vertical Axis Wind Turbine: A Residential Application

Abstract

This paper proposes a robust nonlinear feedback control approach of a residential Savonuis Vertical Axis Wind Turbine (VAWT) based on Double Fed Induction Generator (DFIG) and connected to a powerful grid. However, as the studied system is non linear, it is difficult to be controlled using such traditional methods. Thus, in order to achieve an instantaneous control of both stator active and reactive powers flow, the aim of this approach is to control the Rotor Side Converter (RSC) using a robust non-linear feedback control scheme, in which, a robust control law based on Lyapunov theory associated with a sliding mode controller is used to handle the issue of parameters uncertainty and to guarantee a global asymptotic stability of the system. The proposed approach has been evaluated by simulation results using MATLAB/Simulink. 