Model Predictive Control for PMSG-Based Wind Turbines With Overmodulation and Adjustable Dynamic Response Time

This article presents an improved model-based predictive current control for a surface permanent magnet synchronous generator (SPMSG), where the dynamic response time can be adjusted according to the characteristics of the application and that can operate in the overmodulation region. Moreover, the steady-state errors typically observed in other model predictive controls (MPCs) due to the uncertainties of the system and errors in the parameter values are removed in the proposed MPC. The proposed MPC was tested for the nED100 wind turbine of Norvento in MATLAB/Simulink environment. Besides, it was assessed in an 8.7 kW SPMSG laboratory prototype. The simulation and experimental results indicate that the proposed MPC works properly in an overmodulation region and the desired dynamic response time is achieved whereas the switching frequency is constant.