Optimization & control strategy for offshore wind turbine based on a dual fed induction generator

Abstract

This work is motivated by the progression of wind farms installed in the world and by the will of researchers and specialists to develop techniques and solutions to solve the problem of their integration into the electrical grid. To have maximum converted power, the turbine velocity must be adapted to the wind speed. This is a challenge for manufacturers and researchers who face difficulties in designing powerful and reliable operating point control devices at maximum power. This paper has tried to find a solution that can extract the maximum power generated by the wind turbine and improve its efficiency. For this purpose, several control strategies have been implemented, such as the Maximum Power Point Tracking (MPPT) strategy with velocity control that extracts the maximum power from the wind turbine, the pitch control to limit the aerodynamic power, and the direct torque control of the generator to control the electromagnetic torque and rotor flux. The simulation results obtained in this work show the relevance of optimizing the energy transfer in the wind turbine system. They also show that the use of control strategies contributes greatly to the improvement of the overall energy efficiency of the wind power system used.