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      A Grid Connected Photovoltaic Inverter with Battery-Supercapacitor Hybrid Energy Storage

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          Abstract

          The power generation from renewable power sources is variable in nature, and may contain unacceptable fluctuations, which can be alleviated by using energy storage systems. However, the cost of batteries and their limited lifetime are serious disadvantages. To solve these problems, an improvement consisting in the collaborative association of batteries and supercapacitors has been studied. Nevertheless, these studies don’t address in detail the case of residential and large-scale photovoltaic systems. In this paper, a selected combined topology and a new control scheme are proposed to control the power sharing between batteries and supercapacitors. Also, a method for sizing the energy storage system together with the hybrid distribution based on the photovoltaic power curves is introduced. This innovative contribution not only reduces the stress levels on the battery, and hence increases its life span, but also provides constant power injection to the grid during a defined time interval. The proposed scheme is validated through detailed simulation and experimental tests.

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          Most cited references44

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          Progress in electrical energy storage system: A critical review

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            Comparison of Photovoltaic Array Maximum Power Point Tracking Techniques

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              Electrical energy storage systems: A comparative life cycle cost analysis

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                Author and article information

                Journal
                Sensors (Basel)
                Sensors (Basel)
                sensors
                Sensors (Basel, Switzerland)
                MDPI
                1424-8220
                11 August 2017
                August 2017
                : 17
                : 8
                : 1856
                Affiliations
                Power Electrical and Electronic Systems Research Group, Escuela de Ingenierías Industriales, Universidad de Extremadura, Avda. de Elvas, s/n, 06006 Badajoz, Spain; mguerrero@ 123456peandes.net (M.Á.G.-M.); fbarrero@ 123456unex.es (F.B.-G.); milanes@ 123456unex.es (M.I.M.-M.)
                Author notes
                [* ]Correspondence: vminmar@ 123456unex.es ; Tel.: +34-924-286-768
                Author information
                https://orcid.org/0000-0003-1758-8173
                https://orcid.org/0000-0002-2696-679X
                Article
                sensors-17-01856
                10.3390/s17081856
                5580073
                28800102
                ed2f7c28-2733-40f2-b1a5-2ca6d3066091
                © 2017 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 18 June 2017
                : 08 August 2017
                Categories
                Article

                Biomedical engineering
                photovoltaic power systems,inverters,energy storage,hybrid power systems,power generation planning

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