Support vector machine-based active fault-tolerant control for wind turbine

Abstract

This paper presents an active fault-tolerant control method (FTC) for compensating pitch actuator faults in the hydraulic pitch system of variable speed wind turbine (WT). The proposed control strategy incorporates an unknown input observer (UIO) to estimate the state of the hydraulic pitch system, a support vector machine (SVM) based fault estimation block to provide active information on the state of the actuator fault, and an SVM-based reconfigurable controller to compensate for pitch actuator faults in order to recover the pitch dynamics. the effectiveness of the considered methods is validated using 4.8MW wind turbine.