The uncertainty and variability of the Renewable Energy Sources (RES) power plants within the power grid is an open issue. The present study focuses on the use of batteries to overcome the limitations associated with the photovoltaic inverter operation, trying to maximize the global energy produced. A set of switches, was placed between a few photovoltaic modules and a commercial inverter, capable to change configuration of the plant dynamically. Such system stores the power that the inverter is not able to let into the grid inside batteries. At the base of this optimization, there is the achievement of two main configurations in which the batteries and the photovoltaic modules are electrically connected in an appropriate manner as a function of inverter efficiency and thus solar radiation. A control board and the relative program, to change the configuration, was designed and implemented, based on the value of the measured radiation, current, batteries voltage, and calculated inverter efficiency. Finally from the cost and impact analysis we can say that, today the technology of lithium batteries, for this application, is still too expensive in comparison with lead-acid batteries.

Experimental tests to recover the photovoltaic power by battery system / Dell'Era, A.; Bocci, E.; Sbordone, D.; Villarini, M.; Boeri, F.; Di Carlo, A.; Zuccari, F.. - In: ENERGY PROCEDIA. - ISSN 1876-6102. - ELETTRONICO. - 81:(2015), pp. 548-557. (Intervento presentato al convegno 69th Conference of the Italian Thermal Machines Engineering Association, ATI2014 tenutosi a Milano) [10.1016/j.egypro.2015.12.128].

Experimental tests to recover the photovoltaic power by battery system

Dell'Era, A.;
2015

Abstract

The uncertainty and variability of the Renewable Energy Sources (RES) power plants within the power grid is an open issue. The present study focuses on the use of batteries to overcome the limitations associated with the photovoltaic inverter operation, trying to maximize the global energy produced. A set of switches, was placed between a few photovoltaic modules and a commercial inverter, capable to change configuration of the plant dynamically. Such system stores the power that the inverter is not able to let into the grid inside batteries. At the base of this optimization, there is the achievement of two main configurations in which the batteries and the photovoltaic modules are electrically connected in an appropriate manner as a function of inverter efficiency and thus solar radiation. A control board and the relative program, to change the configuration, was designed and implemented, based on the value of the measured radiation, current, batteries voltage, and calculated inverter efficiency. Finally from the cost and impact analysis we can say that, today the technology of lithium batteries, for this application, is still too expensive in comparison with lead-acid batteries.
2015
69th Conference of the Italian Thermal Machines Engineering Association, ATI2014
Distributed generation; Energy storage; Photovoltaic; Power plants; Renewable energy sources; Energy (all)
04 Pubblicazione in atti di convegno::04c Atto di convegno in rivista
Experimental tests to recover the photovoltaic power by battery system / Dell'Era, A.; Bocci, E.; Sbordone, D.; Villarini, M.; Boeri, F.; Di Carlo, A.; Zuccari, F.. - In: ENERGY PROCEDIA. - ISSN 1876-6102. - ELETTRONICO. - 81:(2015), pp. 548-557. (Intervento presentato al convegno 69th Conference of the Italian Thermal Machines Engineering Association, ATI2014 tenutosi a Milano) [10.1016/j.egypro.2015.12.128].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1071694
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