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A Geometric Point of View on Parallel Interconnection of Buck Converters

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Abstract

This paper tackles the current sharing problem for interconnected power converters. Specifically, it considers a single load, fed by buck converters via a common DC bus. In such a case, it has been recently shown that dynamics related to (i) voltage regulation and (ii) current distribution can be completely separated without resorting to frequency separation argument, which inevitably lowers achievable performance. In this paper, the origin of this separation is investigated. A comprehensive analysis is provided by relying on geometric techniques. Controller design example exploiting the new structure is also proposed. Numerical simulations promote the decomposition benefit and illustrate the geometric notions.
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Dates and versions

hal-02053176 , version 1 (01-03-2019)

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Jérémie Kreiss, Jean-François Trégouët, Romain Delpoux, Jean-Yves Gauthier, Xuefang Lin-Shi. A Geometric Point of View on Parallel Interconnection of Buck Converters. ECC, Jun 2018, Limassol, Cyprus. pp.70-75, ⟨10.23919/ECC.2018.8550575⟩. ⟨hal-02053176⟩
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