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The level of penetration of grid-connected photovoltaic (PV) systems has grown very quickly in recent years. Nonetheless, network stresses related to the recurrent voltage and frequency oscillations caused by their irregular power production could be a limiting factor on the future expansion of these applications. With the capability of storing and releasing electrical energy on demand, Energy Storage Devices (ESDs) may play a key role in finding an effective solution to overcome these kinds of problems. The aim of this paper is to provide a description of the state-of-the-art power conversion systems used to combine ESDs and grid-connected PV plants. The work has been edited after an accurate analysis of the current scientific literature, focusing particular attention on medium-high-power PV applications utilizing batteries and/or supercapacitors. A detailed analysis on advantages, disadvantages and range of application is provided for each of the reported conversion systems.
CitationCitro, C. [et al.]. Overview of power processing structures for embedding energy storage in PV power converters. A: IEEE International Conference on Industrial Electronics. "Proceedings of the 37th annual conference on IEEE Industrial Electronics Society: [7-10 November 2011], Melbourne, Australia". Melbourne: IEEE Computer Society Publications, 2011, p. 2417-2423.
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