"Contrôle modulaire décentralisé - Application aux convertisseurs multi-phasés isolés entrelacés et magnétiquement couplés".

Abstract : The field of energy conversion requires, in most cases, the implementation of specific and expensive studies in order to answer to various applications with the best performances of efficiency, compactness, and EMC for example. To propose a generic and scalable solution, we are interested in the use of a network of optimized micro-converters, low power, which can be combined in series and/or in parallel, to cover a wide range of applications. Under these conditions, one single effort is to focus on the design of an optimized micro-converter which plays the role of individual cell or brick base for the establishment of the complete network. However, this means also to implement a control method adapted to many micro- converters and a communication method between all micro-converters, to ensure a good balance of power. The main objective of this thesis is to provide an integrated solution for controlling both internal commutation cells of each micro-converter and the all network itself. To achieve this, a modular and fully decentralized control solution is proposed. Three essential steps are studied: the generation of interleaved carriers, the phase currents balancing and the output variables regulation (current and / or voltage). These three steps are discussed in order to propose a fully decentralized solution. Several test cards were realized to validate each function independently. An integrated circuit (demonstrator), implementing all the necessary control functions for a 5V-2A-1MHz micro- converter has also been designed and tested. The experimental results clearly demonstrate the validity of the proposed solutions, which opens the way to a control much more adapted to these new architectures of multi-phase conversion and distributed network.
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Submitted on : Monday, December 16, 2013 - 2:01:39 PM
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Zi Jian Xiao. "Contrôle modulaire décentralisé - Application aux convertisseurs multi-phasés isolés entrelacés et magnétiquement couplés".. Energie électrique. Institut National Polytechnique de Toulouse - INPT, 2013. Français. ⟨tel-00912545v2⟩

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