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Contribution à l'étude des machines électriques en présence de défaut entre-spires : Modélisation - Réduction du courant de défaut

Abstract : The main objective of this research is to establish the sufficiently precise models to study the behavior of electrical machines in the presence of inter-turn short circuit fault and then find the relevant signatures to detect this type of fault. The other objective is to design a limited short-circuit current electrical machines to reduce the risk of fault development. The first modeling approach is a comprehensive study using the time stepping finite element method. The results obtained by this model "finite element" on a MSAP and MAS, healthy and faulty, for different levels of fault severity, are close with those obtained experimentally by two test benches. The second approach is to develop a model circuit electric, whose complexity depends on the type of magnetic structure and the type of machine winding. We have proposed two methods for determining the model parameters: 1 - numerical methods (FEM) which require long time bur very precise; 2 establish new analytical expressions which is fast but less precise. In the last part, a method based on segmentation of the magnet is presented in order to reduce the short circuit current. The segmented PM motor contains the reduced fault current and can be used in the application which requires high degree of reliability
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https://hal.univ-lorraine.fr/tel-01748778
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Babak Vaseghi. Contribution à l'étude des machines électriques en présence de défaut entre-spires : Modélisation - Réduction du courant de défaut. Autre. Institut National Polytechnique de Lorraine, 2009. Français. ⟨NNT : 2009INPL090N⟩. ⟨tel-01748778⟩

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