Power System Topology for EV Parks

A high diffusion of electric vehicles promoted by international policies for the gas emissions reduction requires the electrification of car parks. The literature on e-mobility is currently very numerous on the problems of the energy demand that the diffusion of EVs will pose and on the integration systems with renewable sources. This paper focuses on the power distribution system for several cars in an electrified outdoor parking that requires special arrangements that are solved at present adapting existing components to the specific use and prospecting the development of dedicated components in the near future. It suggests a system topology that promotes the modularity for outdoor parking to facilitate the installation, maintenance, operation and efficient control. In particular, it proposes LV prefabricated busbars for the power distribution to the recharging sockets along the main lines of the parking lot. The safety problems mainly related to the risk of fire and/or explosion of the EVs, contribute to determine for EV parks some characteristics of sizing, equipment and the need to define some forensic aspects. The parking power supply system can be integrated with photovoltaic panel covers and with storage systems as flywheel of energy absorption.