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Influence of Efficiency, Aging and Charging Strategy on the Economic Viability and Dimensioning of Photovoltaic Home Storage Systems

Munzke, Nina; Büchle, Felix; Smith, Anna; Hiller, Marc

PV in combination with Li-ion storage systems can make a major contribution to the energy transition. However, large-scale application will only take place when the systems are economically viable. The profitability of such a system is not only influenced by the investment costs and economic framework conditions, but also by the technical parameters of the storage systems. The paper presents a methodology for the simulation and sizing of PV home storage systems that takes into account the efficiency of the storage systems (AC, DC standby consumption and peripheral consumption, battery efficiency and inverter efficiency), the aging of the components (cyclic and calendar battery aging and PV degradation), and the intelligence of the charging strategy. The developed methodology can be applied to all regions. In this paper, a sensitivity analysis of the influence of the mentioned technical parameters on the dimensioning and profitability of a PV home storage is performed. The calculation is done for Germany. Especially, battery aging, battery inverter efficiency and a charging strategy to avoid calendar aging have a decisive influence. While optimization of most other technical parameters only leads to a cost reduction of 1–3%, more efficient inverters can save up to 5%. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000140079
Veröffentlicht am 17.11.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Elektrotechnisches Institut (ETI)
Batterietechnikum (Batterietechnikum)
Institut für Angewandte Materialien - Energiespeichersysteme (IAM-ESS)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 16.11.2021
Sprache Englisch
Identifikator ISSN: 1996-1073
KITopen-ID: 1000140079
HGF-Programm 38.02.03 (POF IV, LK 01) Batteries in Application
Erschienen in Energies
Verlag MDPI
Band 14
Heft 22
Seiten Artkl.Nr.: 7673
Schlagwörter PV home storage system; battery aging; economic analysis; battery efficiency; inverter efficiency; charging strategy; sensitivity analysis
Nachgewiesen in Scopus
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