NONLINEAR H∞ CONTROL OF VARIABLE SPEED WIND TURBINES FOR POWER REGULATION AND LOAD REDUCTION BY JOVÁN OSEAS MÉRIDA RUBIO and LUIS TUPAK AGUILAR BUSTOS
نویسنده
چکیده
A control strategy is realized which solve the problem of output power regulation of variable speed wind energy conversion systems by combining a linear control for blade pitch angle with a nonlinear H∞ torque control which mitigate the effects of external disturbances that occur at the input and output of the system. The controller exhibits better power and speed regulation when compared to classic linear controllers. We assume that the effective wind speed and acceleration are available from measurements on the wind turbine. In order to validate the mathematical model and evaluate the performance of proposed controller, we used the National Renewable Energy Laboratory (NREL) aerolastic wind turbine simulator FAST. Simulation and validation results show that the proposed control strategy is effective in terms of power and speed regulation.
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