Extension of Winding Function Theory for Modeling and Diagnosis of Partial Demagnetization Fault in PMSM Drive
Authors
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Zakaria Gherabi
AffiliationDiagnosis Group, LDEE Laboratory, Electrical Engineering Faculty, University of Sciences and Technology of Oran, Bir El Djir, P. O. B. 1505, El-Mnaouar, Oran 31000, Algeria
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Noureddine Benouzza
Affiliation
Diagnosis Group, LDEE Laboratory, Electrical Engineering Faculty, University of Sciences and Technology of Oran, Bir El Djir, P. O. B. 1505, El-Mnaouar, Oran 31000, Algeria
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Azeddine Bendiabdellah
Affiliation
Diagnosis Group, LDEE Laboratory, Electrical Engineering Faculty, University of Sciences and Technology of Oran, Bir El Djir, P. O. B. 1505, El-Mnaouar, Oran 31000, Algeria
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Djilali Toumi
Affiliation
Electrical Engineering Department, L2GEGI Laboratory, Faculty of Applied Sciences, University of Ibn-Khaldoun of Tiaret, P. O. B. P78, Tiaret 14000, Algeria
Abstract
This paper proposes the development of a new mathematical model dedicated to the diagnostic of the partial Demagnetization Fault (DF) in Permanent Magnet Synchronous Motor (PMSM). To do this, an extension of the Modified Winding Function Approach (MWFA) is proposed to accurately take into account the air gap asymmetry caused by the Demagnetization Fault (DF) in the PMSM inductances calculation. The calculated inductances are then used in the magnetically coupled electrical circuit model to simulate the PMSM behavior in the different operating modes. Finally, a diagnostic method based on the stator current spectral analysis is used to highlight the PMSM stator current spectral content in the various operating modes (with and without Demagnetization Fault).
