Software Communication Interface for OCPP-Based DC Fast Charging Stations

Abstract

With increasing number of electric vehicles (EVs) on the road and many automotive companies pledging to phase out petrol and diesel vehicles to go completely electric, there is need for investments in EV Charging infrastructure to ensure that there are enough charging facilities to address a consumer's concern of reliable charging access irrespective of location and distance. With the rise in innovation in the EV charging infrastructure, there is also a need to ensure the interoperability between various components within the charging infrastructure. This paper proposes an open charge point protocol (OCPP) compliant software communication interface component for a DC fast charging station that establishes a communication between the electric vehicle (EV), electric vehicle supply equipment (EVSE) and the central management system (CMS) using shared memory approach of inter process communication. This interface also ensures simultaneous charging for two vehicles.