If you are referring to the PMSM block, you will need to set certain parameters according to the Wind Turbine you've modelled. For example, set Mechanical input to Torque Tm,and Rotor Type to Round. More information can be found here: Permanent Magnet Synchronous Machine.
Also look into this model in the File Exhange: Variable Speed Wind Turbine with PMSG. This file is one of the several submissions in MATLAB File Exchange on MATLAB Central which is a forum for our product users to interact, exchange information and knowledge, without MathWorks' involvement. Feel free to contact the author of this submission directly for specific questions about the implementation