89725 20220215103549.0 doi 10.3390/en12224393 sideral 118084 ART-2019-118084 eng Sanz Gorrachategui, Iván (orcid)0000-0003-0198-5094 Partial state-of-charge mitigation in standalone photovoltaic hybrid storage systems 2019 Access copy available to the general public Unrestricted Energy Storage in photovoltaic installations has increased in popularity in recent years due to the improvement in solar panel technology and energy storage systems. In several places where the grid is not available, in remote isolated rural locations or developing countries, isolated photovoltaic installations are one of the main options to power DC micro-grids. In these scenarios, energy storage elements are mandatory due to the natural day-night cycles and low irradiation periods. Traditionally, lead-acid batteries have been responsible for this task, due to their availability and low cost. However, the intermittent features of the solar irradiance patterns and load demand, generate multiple shallow charge–discharge cycles or high power pulses, which worsen the performance of these batteries. Some Hybrid Energy Storage Systems (HESSs) have been reported in the literature to enhance the lifetime and power capabilities of these storage elements, but they are not intended to overcome the Partial State of Charge (PSoC) issue caused by daily cycles, which has an effect on the short and mid-term performance of the system. This paper studies the impact of the already proposed HESSs on PSoC operation, establishing the optimal hybrid ratios, and implementing them in a real installation with a satisfactory outcome. info:eu-repo/grantAgreement/ES/DGA/LMP16-18 info:eu-repo/grantAgreement/ES/MINECO/RTC-2015-3358-5 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.702 2019 ENERGY & FUELS 63 / 112 = 0.562 2019 Q3 T2 0.635 2019 Control and Optimization 2019 Q2 Electrical and Electronic Engineering 2019 Q2 Renewable Energy, Sustainability and the Environment 2019 Q2 Energy Engineering and Power Technology 2019 Q2 Fuel Technology 2019 Q2 Energy (miscellaneous) 2019 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Bernal Ruiz, Carlos Universidad de Zaragoza (orcid)0000-0001-9334-4870 Oyarbide Usabiaga, Estanis Universidad de Zaragoza (orcid)0000-0002-4834-940X Bono Nuez, Antonio Universidad de Zaragoza (orcid)0000-0001-5664-7063 Artal Sevil, Sergio Jesús Universidad de Zaragoza (orcid)0000-0001-7764-235X Garayalde Pérez, Érik Aizpuru Larrañaga, Iosu Canales Segade, Jose María 5008 785 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Tecnología Electrónica 5009 535 Universidad de Zaragoza Dpto. Ingeniería Eléctrica Área Ingeniería Eléctrica 12, 22 (2019), 4393 [20 pp.] ENERGIES Energies 1996-1073 2404709 http://zaguan.unizar.es/record/89725/files/texto_completo.pdf Versión publicada 463778 http://zaguan.unizar.es/record/89725/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:89725 articulos driver 2022-02-15-10:05:05 ARTICLE