Date of download: 12/25/2017 Copyright © ASME. All rights reserved. From: Methods for Controlling a Wind Turbine System With a Continuously Variable Transmission in Region 2 J. Sol. Energy Eng. 2009;131(3):031012-031012-8. doi:10.1115/1.3139145 Figure Legend: Comparison of PI CVT control with fixed speed operation. Time-series data for the variable-speed (“with CVT”) and fixed-speed (“without CVT”) operations are shown for wind velocity, turbine radial velocity, electric power, power coefficient Cp, TSR, and load torque.