A state-space model and control of a full-range PMSG wind turbine for real-time simulations

Direct drive permanent magnet synchronous generators (PMSG) have drawn great interest to wind turbine manufacturers, due to the advance of power electronic technology, improved designs and fabrication procedures of these types of generators. In this research, a state-space model of a PMSG wind turbine was developed, and used for the obtainment of a control strategy in a easier way for a test system in the dq reference frame. Then, a complete model of a PMSG wind turbine connected to an electric grid through a full-scale Back-to-Back converter with its controls was implemented, using the detailed models included in a real-time digital simulator. Simulation results show that the controllers perform efficiently during transient and steady-state conditions, and that the presented model can be used for the development of control strategies prior to their implementation in a professional software.