Abstract
In this paper, a two-stage power conversion system based on the electronic DC link is proposed for interfacing photovoltaic generators with AC mains. A bulk electrolytic capacitor, typically utilized as short-time energy storage device connected across the DC link is replaced by an electronic capacitor, consisting of a bidirectional DC-DC converter terminated by a much smaller capacitance. Since the electronic capacitor mimics the behavior of the bulk capacitance at the DC-link side, the original operation is retained in a plug-and-play manner. Simulations and experiments validate the proposed method feasibility.
Published Version
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