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Stabilité des réseaux embarqués : Interactions Puissance - Structure - Commande

Abstract : Because of the high efficiency of the power electronic converters, ideal regulation of their outputs makes the converter appears as a constant power load seen by its front end power stage. So they can be modeled as a negative resistance around an operating point. As a result, when such a converter is connected to a controlled or uncontrolled power source subsystem, the risk of instability has to be unpacked. To study the stability issue taken by such a system, we have detailed in a first step how to prove the local stability of Distributed Power System. The impedance criterions which are used to analysis the stability of cascaded systems are described. These criterions are applied in the case of two power electronics applications. The first one corresponds to a DC/DC switching converter with its input filter. The second one deals with the stability issues of a system constituted by an input filter and an inverter-motor drive system. In the second part of the thesis, a non linear global control of a cascaded power electronic system is investigated in order to ensure the stability of the whole system with a minimization of its passive components. To uncouple the control of all the outputs variables and ensure the system stability, an I/O linearization technique is proposed. Thanks to the use of a sliding controller, the resulting control architecture is robust as regard to parameters variations and allows a significant diminution of the passive component size
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Submitted on : Thursday, March 29, 2018 - 2:02:33 PM
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  • HAL Id : tel-01752943, version 1



Pisit Liutanakul. Stabilité des réseaux embarqués : Interactions Puissance - Structure - Commande. Autre [cond-mat.other]. Institut National Polytechnique de Lorraine, 2007. Français. ⟨NNT : 2007INPL006N⟩. ⟨tel-01752943⟩



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