we have measured in a very confined place the speed of the wind around 16 m/s. I have found out the power output around 545 w. then we tried to design again a generator (PMSG) for the wind turbine and when we calculate the angular velocity it becomes 55 rad/s which is around 525 RPM, my question is now, is that really too much revolution ? in addition when I calculate the mechanical as well as the electrical frequency became high and again made the voltage high, what is the problem having high voltage as well as high frequency?