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Identification de sources électromagnétiques multipolaires équivalentes par filtrage spatial : Application à la CEM rayonnée pour les convertisseurs d'électronique de puissance

Abstract : For Electromagnetic Compatibility studies, it is useful to get a compact model of the stray magnetic field generated by power electronic systems. This model can be obtained sometimes by numerical modeling, however in most cases, the systems and associated phenomena are too complex to ensure a reliable computation. Instead, measurement of the magnetic stray field close to the device can be used to identify this equivalent magnetic model and then to extrapolate the field in all directions in the surrounding space. The followed method is the inverse problem, i.e. to determine the causes (here the sources of the field) according to the effects (here the measured fields). The chosen model is the magnetic multipolar expansion. The measurement of the magnetic field permits identification of the parameters of the magnetic equivalent multipole. It is compact and adapted well to the characteristics of the studied sources. New sensors of magnetic induction in near field are proposed according to the principle of the Standard CISPR16-1 coils. The new coil shape allows the sensors to be sensitive to only some specific components of the multipolar expansion, which is similar to a spatial filtering. In this thesis, after the description of the tools used, the synthesis method of these new contours is described. An experimental validation is also developed, demonstrating the improvement of the filtering capacity of the multipolar components of the magnetic field towards the existing solutions.
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https://tel.archives-ouvertes.fr/tel-00473780
Contributor : Benjamin Vincent <>
Submitted on : Saturday, April 17, 2010 - 11:23:11 PM
Last modification on : Thursday, November 19, 2020 - 1:00:26 PM
Long-term archiving on: : Wednesday, November 30, 2016 - 5:14:26 PM

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Benjamin Vincent. Identification de sources électromagnétiques multipolaires équivalentes par filtrage spatial : Application à la CEM rayonnée pour les convertisseurs d'électronique de puissance. Sciences de l'ingénieur [physics]. Institut National Polytechnique de Grenoble - INPG, 2009. Français. ⟨tel-00473780v2⟩

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