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Modélisation tridimensionnelle de systèmes électromagnétiques comportant des régions filaires et des régions minces :application en CEM 50 Hz à des dispositifs EDF

Abstract : One of the problems encountered in the numerical analysis of the Maxwell equations is that the studied devices present geometrical distinctive features (thin wire and thin plate). Within the framework of this thesis, we have developed and implemented models allowing to simulate thin conductor in the presence of thin plates in an low frequency electromagnetic field by the finite elements method. ' The low thickness of these conductors reveal sorne problems of singularity due to the calculation of the magnetic field. These problems require the extraction of the terms corresponding to the inductance of the wire, and these terms are computed through more adapted methods (analytical computation, PEEC). The skin effect is taken into account by the modification of the resistance of the thin conductor. We also take into account the presence of the thin plate in interaction with these thin wires in two ways : - thin plate and thin wire are distant from each other ; - thin plate and thin wire are in a circuit whose source is either an external field, voltage source or current source. These formulations have been validated separately by the confrontation with the results of analytical or numerical methods resulting from an axisymmetric simulation in 2D. '!\vo industrial applications have been completed.
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Ali Abakar. Modélisation tridimensionnelle de systèmes électromagnétiques comportant des régions filaires et des régions minces :application en CEM 50 Hz à des dispositifs EDF. Sciences de l'ingénieur [physics]. Institut National Polytechnique de Grenoble - INPG, 2001. Français. ⟨tel-00549658⟩

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