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Modélisation du rayonnement électromagnétique des circuits d'électronique de puissance. Application à un hacheur.

Abstract : The study of electromagnetic compatibility becomes an obligated passage for designers of power electronics circuits. The complexity of phenomena that come into action in that study makes more and more necessary the use of a CAD tool for prediction of radiated and conducted electromagnetic perturbations. The present work is devoted to modelling electromagnetic interference from power electronic circuits. The first proposed method is based on an analytic approach of the problem where the coupling in the circuit are approximately quantified. In the case of complicated circuit, these approximations are not sufficient, so the use of a numerical method becomes indispensable to take into account al1 the coupling in the circuit. The study of numerical methods shows that in the actual state of things, no-method is well adapted to Our application. Nevertheless, Our choice was fixed on the moments method which is the best when responding to specifications. While this method don't solve non-linear problems, it can not take into account non-linear components. So we propose its coupling with a temporal resolution to make linear the resolution. The method is implemented to solve problems with wire structures in three dimensions. After, it is applied to calculate interference from a circuit of a chopper. Numerical results are completed with an experimental evaluation of the radiated field. To improve numerical results, we investigate the “thin wire approximation” used when modelling printed circuit board (PCB). Finally, we propose a more accurate mode1 which take into account skin and nearby effects in the PCB.
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  • HAL Id : tel-00260191, version 1

Citation

Jaleleddine Ben Hadj Slama. Modélisation du rayonnement électromagnétique des circuits d'électronique de puissance. Application à un hacheur.. Autre. Ecole Centrale de Lyon, 1997. Français. ⟨tel-00260191⟩

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