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A geometric approach to nonlinear fault detection and isolation in a hybrid three-cell converter

Abstract : In this paper, the problem of fault detection and isolation in a three-cell converter is investigated using a nonlinear geometric approach. This powerful method based on the unobservability distribution is used to detect and isolate the faulty cell in the three-cell converter. First, a model describing the faults in the cells is presented. The geometric approach is then applied on this faulty model to generate residual signals based on a sliding-mode observer that allows the detection of faults in the three-cell converter. Numerical results show the effectiveness of the proposed sliding-mode residual generators for fault detection and isolation in the three-cell converter.
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https://hal-uphf.archives-ouvertes.fr/hal-03676735
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Submitted on : Tuesday, May 24, 2022 - 11:30:51 AM
Last modification on : Wednesday, May 25, 2022 - 3:42:24 AM

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Samir Khelouat, Taous-Meriem Laleg-Kirati, Atallah Benalia, Djamel Boukhetala, Mohamed Djemai. A geometric approach to nonlinear fault detection and isolation in a hybrid three-cell converter. International Journal of Systems Science, Taylor & Francis, 2019, 50 (5), pp.1069-1088. ⟨10.1080/00207721.2019.1588409⟩. ⟨hal-03676735⟩

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