Design, electromechanical simulation, and control of a variable speed stall-regulated PMSG-based wind turbine

Abstract

ABSTRACTWind turbines are complicated systems including different aerodynamic, mechanical, electrical, and control aspects. A few research works have considered the detailed models which include all aspects of the wind energy systems. These models can be used to cope with the disadvantages of the simple models that neglect some important features and electromechanical interactions. However, in these studies, the existing aerodynamic designs were used which limits the studies to available designs. In the present study, the site-specific blades of a variable-speed stall-regulated wind turbine are firstly designed then employed in simulation with detailed models. Since the stall-regulated turbines do not require active aerodynamic devices to control the captured power in high wind speeds, they are appropriate alternatives to be used in small-scale turbines. Hence, this type of turbine is studied in the present paper and the details of blade design and electromechanical simulation are discussed. The controllers are designed for maximum power point tracking in low and moderate wind speeds and limiting the captured power using the stall phenomenon in high wind speeds. The performance of the turbine with the designed blades is investigated in different wind conditions including simple hub-height and turbulent wind profiles, generated by TurbSim software.