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Theses

Commande tolérante aux défauts d’une chaine de traction d’un véhicule électrique

Abstract : The various international standards require automakers to optimize conventional power train but mainly to develop other alternatives to drive, one of the most promising is the electric vehicle. However, these new drives should guarantee the same performance and the same level of dependability (reliability and security in this case).Electric power train is built around a large number of components (electrical machine, the sensor, the converter, power electronics, etc.) which may be affected by defects. The detection and localization of these defects are essential but not sufficient to ensure the dependability of the system. Indeed, to ensure operation in degraded mode, you must implement architecture of fault tolerant control (FTC). The main objective of this thesis is to propose new fault tolerant control architectures of an electric vehicle induction machine power train in the presence of several types of mechanical sensor failure. This thesis is organized into four chapters.Chapter 1 is a comprehensive state of the art with a critical analysis of architectures and control systems tolerant to faults of electric powertrains and a state of the art of the various defects that may occur in the chain of electric traction.Chapter 2 proposes two architectures of fault tolerant control: Hybrid FTC and GIMC (Generalised Internal Model Control); Hybrid FTC approach is a combination of two controllers, the first is a PI controller for the sound mode and the second a robust controller for the failed H infinity mode. The architecture allows GIMC restructuring the control law in an adaptive manner. It is designed to ensure robustness of the system in the presence of a fault with an inner loop acting loop correction and diagnosis.Chapter 3 is devoted exclusively to the algorithm voting fault tolerant control based on comparative study of four algorithms with three different topologies: a first structure is proposed on the system output, a second structure is applied system control, and the third structure is a two preceding hybridization.Chapter 4 is devoted to the experimental validation of the architecture described above. The results show the effectiveness of the approaches proposed FTC.
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  • HAL Id : tel-01127131, version 1

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Aziz Raisemche. Commande tolérante aux défauts d’une chaine de traction d’un véhicule électrique. Automatique / Robotique. Université Paris Sud - Paris XI, 2014. Français. ⟨NNT : 2014PA112342⟩. ⟨tel-01127131⟩

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