MPPT based on-off control for DFIG driven by variable speed wind turbine

Abstract

This manuscript deals an on-off Control method which is based on maximum power point tracking and expected to control the rotor side converter of DFIG based wind turbine associated with the grid. The Grid Side Converter is controlled in such a manner to make certain a flat DC voltage as well as ensure sinusoidal current on the network. The modeling and testing of the system demonstrate that the individual block of MPPT, DFIG, and Rotor controllers are functioning to achieve the desired objective. The MPPT blocks are in coordination with the rotor controller block of DFIG based wind turbine, which is trying to keep the torque within the optimal value at which the maximum power is obtained. The performance analysis to the new developed DFIG based WT Matlab Simulink model with MPPT based on-off control is assessed with the conventional (asynchronous) Matlab Simulink model, which demonstrate the enhanced performance output of newly developed model as compared to the traditional model. The performance of the standard Matlab / Simulink model at different wind velocities illustrate that the system has excellent achievement at average wind speeds than that at lower and higher wind speeds. © 2019.