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Potential of battery storage systems to increase the self-consumption of photovoltaics in charging of electric vehicles in residential buildings
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.ORCID iD: 0000-0001-6292-0695
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.ORCID iD: 0000-0003-0051-4098
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.ORCID iD: 0000-0003-4887-9547
2019 (English)Conference paper, Published paper (Other academic)
Abstract [en]

Electric vehicles (EVs) and photovoltaics (PV) are swiftly being adopted to improve sustainability in both the transportation and the electricity sectors. Residential buildings might benefit from self-consuming the locally produced PV electricity to charge the EVs of the residents. However, the temporal mismatch between midday solar power production and late afternoon EV charging reduces the self-consumption (SC) potential. Here, we investigate the potential of battery storage in improving this SC. The batteries are intended to be used to store the PV energy, from midday, to charge the EVs during the late afternoon. Here we estimate the SC with various battery capacities. This work might be of value to grid operators interested in temporal load matching using battery storages. The results indicate that the houses benefit the most from a 5 kWh battery capacity in comparison with 10 kWh or larger. Using a 5 kWh battery, the SC and self-sufficiency (SS) of the median house without an EV improved by 40% and 14%, respectively. With EVs, the same scores improved by 38% and 11%, respectively. This indicates that the batteries were predominantly used to cover the load of the house and were rarely used to supply the load of the EVs.

Place, publisher, year, edition, pages
Dublin, Ireland: Energynautics GmbH, 2019.
Keywords [en]
electric vehicles, photovoltaic, self-consumption, battery storage, residential buildings
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:uu:diva-395825OAI: oai:DiVA.org:uu-395825DiVA, id: diva2:1365386
Conference
3rd E-Mobility Power System Integration Symposium, Dublin, October 14, 2019.
Available from: 2019-10-24 Created: 2019-10-24 Last updated: 2019-10-29Bibliographically approved

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Shepero, MahmoudFachrizal, RezaMunkhammar, JoakimWidén, Joakim

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