LMI-BASED STATE-FEEDBACK CONTROL DESIGN FOR A WIND GENERATING POWER PLANT

Abstract

Several state-feedback design techniques are applied to a multivariable blade pitch controller for a wind turbine generating system comprising a synchronous generator connected to a large power system. Namely; - Ackerman for state feedback and pole placement technique (ACK) - robust LMI-based mixed H2/H/Pole placement (ROB) - Static gain Iterative Linear Matrix Inequality (ILMI) controller, design techniques. The proportional part is represented by the system state-feedback while the integral one represents the active control part representing the controlled electrical torque delivered to the power system. To demonstrate the effectiveness of the proposed techniques, divers tests, namely, step/tracking in the controlled variable, variation in system parameters, and a wind speed variation (gust) are applied and the results are discussed.