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- W4200536314 abstract "Due to complex electrochemical and thermal phenomena, varying operations towards automotive applications, and vulnerable ancillaries in proton exchange membrane fuel cells (PEMFCs), fault diagnosis and fault-tolerant control (FTC) design have become important aspects to improve the reliability, safety and performance of PEMFC systems. This paper presents a novel FTC scheme for automotive PEMFC air supply systems via coordinated control of the air flow rate and the pressure in cathodes. A dynamic surface triple-step approach is first proposed considering nonlinear dynamics and the multi-input multi-output (MIMO) property, which combines the advantage of dynamic surface control in avoiding an “explosion of complexity” and the advantage of triple-step control in guaranteeing a simple structure and high performance. The normal case, the faulty case at the supply manifold and the faulty case in the back pressure valve are considered in the FTC design, with the stability of the overall system proved using Lyapunov methods. MATLAB/Simulink simulations with a high-fidelity PEMFC model verify the effectiveness of the proposed FTC scheme in regulating the air flow rate and oxygen excess ratio and maintaining the pressure of the cathode at a desired level even under faulty conditions. • The air supply system for proton exchange membrane fuel cells (PEMFCs) is modeled. • Valve stuck and supply manifold leakage faulty cases are considered. • A fault-tolerant control (FTC) scheme is proposed by a triple-step approach. • The stability of the overall system is proved using Lyapunov method. • A high-fidelity PEMFC model is applied to confirm the proposed FTC method." @default.
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- W4200536314 date "2022-01-01" @default.
- W4200536314 modified "2023-10-16" @default.
- W4200536314 title "Fault-tolerant control through dynamic surface triple-step approach for proton exchange membrane fuel cell air supply systems" @default.
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- W4200536314 doi "https://doi.org/10.1016/j.ijhydene.2021.09.117" @default.
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