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Increased PV Utilisation from DC Distribution: Quantification of Geographical Location Impact
P. Ollas, T. Thiringer, H. Chen, C. Markusson
Storage, Photovoltaic (PV), System Performance, Grid Integration, DC-DC Converter
PV Systems and Storage – Modelling, Design, Operation and Performance
Subtopic: Storage
Event: 37th European Photovoltaic Solar Energy Conference and Exhibition
Session: 5EO.2.3
1432 - 1441
ISBN: 3-936338-73-6
Paper DOI: 10.4229/EUPVSEC20202020-5EO.2.3
0,00 EUR
Document(s): paper, presentation


In this paper, the performance of a direct current (DC) distribution system is modelled and compared for a single-family residential building with a conventional alternating current (AC) system to quantify the potential energy savings and gains in PV utilization. The modelling is also made for two different climates to quantify the impact of the geographical location. Results show that the system losses are reduced by 19-46% and the PV utilization increased by 3.9-7.4% when using a DC distribution system compared to an AC equivalent, resulting in system efficiency gains in the range of 1.3-8.8%. Furthermore, it is shown that the geographical location has some effect on the system's performance and PV utilization, but most importantly the grid interaction is paramount for the performance of the DC topology.