A direct vector control based on modified SMC theory to control the double-powered induction generator-based variable-speed contra-rotating wind turbine systems

Abstract

The current and active power ripples are two of the biggest drawbacks of the direct vector control (DVC), as these ripples cause several problems in the electric power generation system from contra-rotating wind turbines (CRWTs) systems. But the DVC technique has multiple advantages that make it among the most widely used techniques in the field of renewable energies for its ease to implementation and simplicity. In this work, a modified sliding mode controller (MSMC) was proposed and applied in the DVC strategy. The combination of the DVC and MSMC controller leads to a more robust control scheme, thus reducing the current, torque, active power, and reactive power ripples of the double-powered induction generator (DPIG). The designed DVC-MSMC strategy is used to improve the performance of the DPIG-based CRWT system. Simulation results done in Matlab software show the effectiveness and robustness of the proposed technique.