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Open AccessArticle

Fault Tolerant Control of DFIG-Based Wind Energy Conversion System Using Augmented Observer

by Xu Wang and Yanxia Shen *
Key Laboratory of Advanced Process Control for Light Industry, Jiangnan University, Wuxi 214122, China
*
Author to whom correspondence should be addressed.
Energies 2019, 12(4), 580; https://doi.org/10.3390/en12040580
Received: 23 December 2018 / Revised: 31 January 2019 / Accepted: 31 January 2019 / Published: 13 February 2019
An augmented sliding mode observer is proposed to solve the actuator fault of an uncertain wind energy conversion system (WECS), which can estimate the system state and reconstruct the actuator faults. Firstly, the mathematical model of the WECS is established, and the non-linear term in the state equation is separated as the uncertain part of the system. Then, the states of the system are augmented, and the actuator fault is considered as part of the augmented state. The augmented sliding mode observer is designed to estimate the system state and actuator fault. A robust fault-tolerant controller is designed to ensure the reliable input of the WECS, maintain the stability of the fault system and maximize the acquisition of wind energy. The numerical simulation results verify the effectiveness of the control strategy. View Full-Text
Keywords: wind energy conversion system; augmented sliding mode observer; fault reconstruction; fault-tolerant control wind energy conversion system; augmented sliding mode observer; fault reconstruction; fault-tolerant control
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Wang, X.; Shen, Y. Fault Tolerant Control of DFIG-Based Wind Energy Conversion System Using Augmented Observer. Energies 2019, 12, 580.

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