Abstract
This paper proposes a new current sharing method. It is based on current mode controlled dc-dc converters and achieves the current sharing by forcing all inner current loops to have the same current reference. Meanwhile, this method decouples control loops from the voltage regulation and current-sharing regulation instead of adding control loops as in traditional master-slave methods. Therefore, the large signal performance is good while its stability is guaranteed. Further, unlike multi-module methods, the modularity of single dc-dc converter is retained. Design rules and small signal analysis are presented. The advantages of the proposed method are verified by experimental results.
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