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

S. Khelouat, Taous-Meriem Laleg-Kirati, A. Benalia, D. Boukhetala, M. Djemai

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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.
Original languageEnglish (US)
Pages (from-to)1069-1088
Number of pages20
JournalInternational Journal of Systems Science
Volume50
Issue number5
DOIs
StatePublished - Mar 16 2019

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