OCPP-based Electric Vehicle AC fast charging solutions for Indian framework

The accelerated adoption of electric vehicles (EV) requires a rapid, scalable EV charging network. Bharat EV Charger Specifications (BEVC-AC001) was the foundation for all earlier works on 3.3kW AC Electric Vehicle Supply Equipment (EVSE). Since the onboard chargers from major EV OEMs are less than 3.3 kW, the EV AC chargers of the same rating were used to meet it. This supports only overnight charging requirements of the EVs with high-capacity battery packs. Now with advancements in technologies, EVs with higher battery capacity for longer ranges are rolled out to meet the user requirements. The present slow AC chargers limited to 16A have huge charging periods with no charging controls. So, the next level of EV charging at 32A with a single phase, up to 7kW and three phase, up to 22kW AC EVSE have been developed based on IS-17017 and AIS-138 standards to hasten the charging process. Although expensive than AC slow chargers, expanding AC fast charging infrastructure with smart connectivity complying with Open Charge Point Protocol (OCPP) is cost-effective than DC EVSEs. The suggested charger delivers controlled charging with simple installation tasks and establishes a communication mechanism between EV and EVSE. This paper describes the design and execution of a standalone and networked AC fast EVSE to accommodate the various user types while taking into account economic Indian needs.