The EV4EU project took another significant step in Denmark with the launch of the second demo site in the country.
Following the launch of the demo site in Risø, which has been operational since August 2023, the project is now entering its public demonstration phase in Bornholm. Using the distributed charging technology previously developed in the EUDP-funded project ACDC., the Danish demo explores the advantages of integrating Vehicle-to-Everything (V2X) strategies in the energy management of parking lots.
While Risø is a research campus of DTU located in Roskilde, Campus Bornholm is an educational institute in the main town of Rønne, on the island of Bornholm. Both parking lots are in working places, but while the first one offers limited access to non-workers, the second one is fully accessible to the public and has therefore different needs and usage patterns. Despite the different settings, the installed EV charging infrastructure is identical at both locations, comprising 6 AC chargers (22 kW) each with two outlets, providing the opportunity for 12 EVs to be connected simultaneously.
The charging infrastructure is integrated via a 43-kW grid connection and operated through a load management system enabling the maintenance of aggregated consumption below a specified threshold. This offers various benefits, such as preventing component overloading or the provision of services.
Users of the charging infrastructure will start their charging sessions through an app developed as part of the project. This app allows the user to provide key inputs, such as the anticipated parking time and the required energy, enabling the load management system to consider user preferences while controlling the overall cluster consumption.
The team has established several sub-objectives, including power limitation and sharing, tracking the renewable generation of the local 180 kW PV plant installed at the school, phase balancing, energy scheduling (prioritization of user needs), charging based on electricity price or CO2 content, robustness against communication loss, and user response to varying energy prices.
According to Mattia Marinelli, EV4EU researcher from DTU, the plan is to “achieve as much as possible during the next year of demonstration and validate new approaches to ensure public charging in a grid-friendly manner.”
Led by DTU in collaboration with Circle Consult, Bornholms Energi & Forsyning, and Campus Bornholm, the new parking lot is publicly accessible and will eventually be used by students, employees, residents, and tourists.
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