Q2. The SAM wind turbine data base has the power curve for the Vestas V112-3.0 and Vestas V90-3.0 which are both 3 MW turbines with the same hub height of 80 m but with different rotor diameters. Use SAM to determine the AEP and capacity factor for these turbines for 50 m wind speeds of 5, 6, and 7 m/s with a Weibull shape factor K= 2. Comment on the effect of rotor diameter on performance in the light of the trend shown in Lecture 1 of increasing rotor diameter for north American turbines. a