CONTROL APPROACH OF A GRID CONNECTED DFIG BASED WIND TURBINE USING MPPT AND PI CONTROLLER

Abstract

. A double-fed induction generator (DFIG) has been frequently utilized in wind turbines due to its ability to handle variable-speed operations. This study investigates the real parameters of the Mitsubishi MWT 92/2.4 MW wind turbine model. It performs and implements grid-connected variable-speed turbines to control the active and reactive powers. Moreover, it presents a vector control strategy for DFIG for controlling the generated stator power. The unique feature of the approach proposed in the study is the comparison between two control techniques - the Maximum Power Point Tracking (MPPT) algorithm and the Proportional-Integral (PI) controller - for regulating DFIG based wind turbine systems. Thus, the result demonstrates that the performance of the MPPT technique provides strong robustness and reaches steady-state much faster than the PI controller with variable parameters. To the contrary, a typical PI controller gives a fast response when tracking the references of DFIG magnitudes. The effectiveness of the overall sys-tem is tested by MATLAB simulation.