A New Framework for Dealing with Input Constraints on Parallel Interconnection of Buck Converters

Abstract : This paper tackles the current sharing problem for interconnected power converters. Specifically, it considers a single load, fed by parallel buck converters via a common DC bus. In such a case, it has been recently shown that dynamics related to current distribution can be controlled without impacting voltage regulation. Such a decoupling is performed without resorting to frequency separation argument, which inevitably lowers achievable performance. This decoupling can be destroyed by input constraints, though. In this context, this paper shows that a mere unilateral coupling can still be achieved: Using a novel control structure, foremost control goal of voltage regulation can be made independent of current distribution control. Controller design example exploiting the control scheme is provided together with numerical simulations.
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Conference papers
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https://hal.archives-ouvertes.fr/hal-02341833
Contributor : Jean-François Trégouët <>
Submitted on : Thursday, October 31, 2019 - 3:49:11 PM
Last modification on : Wednesday, November 20, 2019 - 4:59:48 PM

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Jérémie Kreiss, Jean-François Trégouët, Romain Delpoux, Jean-Yves Gauthier, Xuefang Lin-Shi. A New Framework for Dealing with Input Constraints on Parallel Interconnection of Buck Converters. ECC, Jun 2019, Naples, Italy. ⟨10.23919/ECC.2019.8795805⟩. ⟨hal-02341833⟩

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