Fault-Tolerant Control of Wind Turbine System Using Linear Parameter-Varying Model. (14th July 2022)

• Record Type: Journal Article
• Authors: Li, Shanzhi; Aitouche, Abdel; Christov, Nicolai
• Other Names: Zhang Jian Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2022(2022)
• Publication Date: 2022-07-14
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2022/1290639
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : This paper proposes a fault-tolerant control scheme for WTS with actuator faults and disturbance, based on a linear parameter-varying (LPV) model. First, a LPV model of WTS subject to disturbances and actuator fault is obtained. Using this model, unknown input observer (UIO) is developed to estimate the WTS fault and state variables. Then, an integral tracking controller for LPV systems is developed. Based on the Lyapunov and H ∞ theory, the convergence of UIO and the stability of the closed-loop system are analyzed and ensured. The proposed fault-tolerant controller is applied to a wind turbine system with pitch and torque actuator faults, and its performances are compared with those of controller without integral action.