Control of a Wind Turbine Emulator Based on Variable Pitch Angle with a Self-Excited Induction Generator

Abstract

This article highlights the control of an electromechanical wind emulator designed to mimic the behavior of a wind turbine. The emulator employs a self-excited induction generator, which is driven by a DC motor. A DC-DC Buck converter adjusts the rotation speed, adapting to changes in the wind profile. A PI controller is employed to oversee and fine-tune the output current from the converter, ensuring alignment with the characteristics of the wind turbine model in use. The control strategy is crafted to oversee the wind turbine power based on the wind speed. This is achieved by adjusting the pitch angle value and tip speed, aiming to prevent wind turbine from stalling. The efficacy of the implemented control strategy is demonstrated in the Matlab-Simulink environment, where the proposed system is evaluated. The results show accurate tracking and no overshoot.