Polynomial Observer-Based Controller Synthesis and Fault-Tolerant Control for Tracking Optimal Power of Wind Energy Conversion Systems

This paper proposes a new approach to design a fault-tolerant control (FTC) scheme for tracking the optimal power of wind energy conversion systems (WECSs). In this paper, the considered fault will not only impact on actuator but also sensors. As the fault severely affects the performance of WECSs,...

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Bibliographic Details
Published in:IEEE access 2020-01, Vol.8, p.1-1
Main Authors: Van-Phong, Vu, Van-Thuyen, Ngo, Van-Dung, Do, Truong, Dinh-Nhon, Quynh, Nguyen Vu, Phuc, Bui Duc Hong, Vu, Mai The, Do, Ton Duc
Format: Article
Language:English
Subjects:
Actuators
Aerodynamics
Controllers
Energy conversion
Fault tolerance
Fault tolerant systems
Fault-Tolerant Control
Observer-Based Controller
Observers
Polynomials
Sensors
SOS
Torque
Tracking control
WECSs
Wind power
Wind speed
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Summary:This paper proposes a new approach to design a fault-tolerant control (FTC) scheme for tracking the optimal power of wind energy conversion systems (WECSs). In this paper, the considered fault will not only impact on actuator but also sensors. As the fault severely affects the performance of WECSs, the FTC are required to be worked accurately and effectively. The polynomial observer, as a part of the proposed FTC system, is synthesized to estimate the aerodynamic torque, electromagnetic torque, and fault simultaneously without using sensors to measure. The information of these parameters is sent back to the LQR (Linear Quadratic Regular) controller of WECSs. Both fault and aerodynamic torque in this study are unnecessary to fulfil any constraint. It should be noted that WECSs is reconstructed to a new form based on the descriptor technique, then the observer will design for this new form instead of the original system. Based on Lyapunov methodology and with the aid of SOS (Sum-Of-Square) technique, the conditions for polynomial observer design are derived in the main theorems. Finally, the simulation results have proved the effectiveness and merit of the proposed FTC method.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.3016433