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Convertisseur continu-continu à rapport de transformation élevé pour applications pile à combustible

Abstract : This work deals with the study, design and building of a DC-DC converter, which is associated with a fuel cell source. According to the application, this converter should have a high voltage ratio which is about 12, and it is able to limit the ripple current of source below 1% of the maximum average current. A cascaded structure composed by two converters has been chosen and allows obtaining a high voltage ratio. The first stage is an interleaved Boost associated with a L-C input filter, to reduce ripple of the current delivered by the source. The second stage is a three-level Boost which reduces the voltage stress of the switches, thereby reducing losses of the converter. The control of the converter is defined basing on the use of a non-linear regulator. Thanks to use the flatness control, the global control is realized through the regulation of the intermediate voltage and of the power transited to the load. Finally, a small power test converter (3 kW) has been realized, in order to validate the converter operation and the proposed control
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https://hal.univ-lorraine.fr/tel-01748756
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Bin Huang. Convertisseur continu-continu à rapport de transformation élevé pour applications pile à combustible. Autre. Institut National Polytechnique de Lorraine, 2009. Français. ⟨NNT : 2009INPL021N⟩. ⟨tel-01748756⟩

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