Controlling PMSG Wind Turbine Connected to Three Level Neutral Point Clamped Inverter Based on MPC

Abstract

Wind energy generation systems are becoming increasingly important for harmonic distortion control and power quality standards. In recent years, variable speed technology has also advanced rapidly due to progress in power electronics. The three key components of a wind power conversion system (WECS) are electrical generators, machine-side converters (MSC), and grid-side converters (GSC). Among these, the permanent magnet synchronous generator (PMSG) is widely used due to its favorable characteristics. Once wind energy is converted into electrical power, it can be injected into the utility grid via synchronous generators or grid-side converters. Therefore, various topologies and control strategies must be investigated to determine the most suitable approach for the machine-side converter. This work focuses on the application of model predictive control (MPC) for a surface-mounted permanent magnet synchronous generator wind turbine. The electrical model of the machine is employed for the control design. The power converters are selected in consideration of the complex and highly nonlinear aerodynamic behavior of wind turbines. Although MPC is a relatively recent application in power electronics, it is a promising control technique. Furthermore, MATLAB and Simulink are used to implement the MPC algorithm and to provide a simplified model of the turbine system.