EU PVSEC Programme Online
EU PVSEC 2020, 7 - 11 September 2020
Presentation: 5EO.2.3 Increased PV Utilisation from DC Distribution: Quantification of Geographical Location Impact
Type: Oral
Date: Friday, 11th September 2020
08:30 - 10:00
Author(s): P. Ollas, T. Thiringer, H. Chen, C. Markusson
Presenter / Speaker: P. Ollas, RISE, Borås, Sweden
Event: Conference Conference
Session: 5EO.2 Energy Storage
Type(s) of Access:  Conference Registration
Topic: 5. 4 Storage
Keywords: Storage, Photovoltaic (PV), System Performance, Grid Integration, DC-DC Converter
Summary / Abstract: 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.