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Theses

Amélioration des techniques d’estimation des perturbations conduites : application à une chaîne de traction de véhicule électrique

Abstract : In the transport field, whether road, rail, marine or aeronautic, the number and power of embedded electric or electronic devices are constantly increasing. New features, often developed for passengers comfort, are responsible for this increase. Moreover, many actuators which were previously mechanical, thermal or hydraulic are replaced by electrical ones. Those new actuators need an electrical power supply which most of the time rely on power electronics. It is well known that this kind of device generate high levels of disturbances. In order to take into account the electromagnetic compatibility (EMC) at the design stage of a product, builders need tools adapted to EMC or specific conception rules. The work performed during this thesis is geared in order to meet these needs.The first part deals with the modeling of conducted electromagnetic interferences (EMI) of an electrical power train mainly composed by power electronics converter and a wound rotor synchronous machine. Thanks to this study, a generic model of any non-insulated structure of power electronics was developed. The second part consists in developing a new computing method which allows to reduce the time of computing. Based on the observation of signals on different time intervals, a reconstruction technique by convolution product is proposed and applied for a common mode current. The third part deals with the elaboration of sources of disturbances by transfer functions which describe the high frequency behavior of a switching cell. This modeling is directly implementable in a circuit simulation software as it allows to linearize the intrinsic non linear behavior of the semiconductor components.
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Denis Labrousse. Amélioration des techniques d’estimation des perturbations conduites : application à une chaîne de traction de véhicule électrique. Autre. École normale supérieure de Cachan - ENS Cachan, 2010. Français. ⟨NNT : 2010DENS0042⟩. ⟨tel-00595296⟩

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