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Contribution à l'étude de la sûreté de fonctionnement et de la continuité de service des bus DC

Abstract : Electric Distributed Power Systems (DPS) are used in many industrial sectors. Continuity of service of these systems as well as their reliability are now of the major concerned. Energy management and stability are fundamental requirements for these systems to operate normally. In these systems, load converters exhibit Constant Power Load (CPL) behavior tend to destabilize the system. The system stability also can be threatened by unbalanced loads connected to the common bus. Furthermore, the failure of the controllable switch of the converter can cause serious malfunctions of the system. Undetected and uncompensated fault in real time can quickly endanger the entire power system. Therefore, the implementation of effective and rapid fault detection methods and compensation is mandatory. In this thesis, we study the energy management, stability and continuity of service of a DC-DPS. After the study of energy management and system stability, an active decentralized stabilization method is proposed to increase the stability domain of the system and to avoid instability in the case of unbalanced loads. Furthermore, efficient and very rapid methods of fault detection for a controllable switch are also proposed. We have presented a fault tolerant topology with redundancy for a DC-DC converter, which must ensure continuity of service of the DPS in any fault conditions (open or short circuit). Theoretical studies have been validated by simulation and experimental tests
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Submitted on : Thursday, March 29, 2018 - 12:54:08 PM
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Ehsan Jamshidpour. Contribution à l'étude de la sûreté de fonctionnement et de la continuité de service des bus DC. Autre. Université de Lorraine, 2014. Français. ⟨NNT : 2014LORR0051⟩. ⟨tel-01750759⟩



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