PV-Battery Supported Level-1 DC Fast charger for Electric Vehicles

As the electric vehicles is gaining popularity there has been an increase in the demand of the charging infrastructure for EV charging. Thus for the unhindered growth in EV acceptance, there is a great need to develop such charging methods that can be easily integrated with existing distribution system such that the harmful effect of excess EV penetration can be mitigated. This paper presents a concept to develop a charger such that it is able to provide a high current charging to the load at DC level-1 charging power. Since high power chargers draw very large current they can cause serious problems to the distribution system therefore PV supported charging station would reduce the effect on the distribution grid while supplying a heavy amount of power for fast charging applications. This paper uses isolated unidirectional dual bridge (IUDB) DC/DC converter to supply the power absorbed from the solar PV, AC grid and the storage battery to the EV.