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Appl. Sci. 2018, 8(5), 794; https://doi.org/10.3390/app8050794

Fault-Tolerant Control Strategy of a Wind Energy Conversion System Considering Multiple Fault Reconstruction

Key Laboratory of Advanced Process Control for Light Industry, Jiangnan University, Wuxi 214122, China
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Received: 27 March 2018 / Revised: 11 May 2018 / Accepted: 11 May 2018 / Published: 16 May 2018
(This article belongs to the Section Mechanical Engineering)
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Abstract

A robust sliding mode observer (SMO) is proposed to achieve multiple fault reconstruction for a wind energy conversion system (WECS) with simultaneous actuator and sensor faults. Firstly, the state equation of the WECS is established. The orthogonal transformation matrix and a post filter are introduced, and a new augmented system is constructed; then, the sensor fault is converted into an actuator fault to diagnose. The fault information is collected by the equivalent output control, and the simultaneous reconstruction algorithm of the sensor fault and the actuator fault is given. Through compensation control, the reliable control input of the WECS is guaranteed, and the function of active fault tolerant control for multiple faults is achieved. Simulation experiments show that the proposed method can accurately reconstruct the actuator and sensor faults, and maximum wind energy capture can be achieved by active fault-tolerant control. View Full-Text
Keywords: wind energy conversion system; sensor fault; actuator fault; multiple fault reconstruction; fault tolerant control wind energy conversion system; sensor fault; actuator fault; multiple fault reconstruction; fault tolerant control
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wang, X.; Shen, Y. Fault-Tolerant Control Strategy of a Wind Energy Conversion System Considering Multiple Fault Reconstruction. Appl. Sci. 2018, 8, 794.

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