Electric Vehicle Charging with Reactive Power Compensation to Distribution Systems

This paper presents how the Electric Vehicle (EV) bidirectional chargers can help the Distribution Systems. In addition to the battery charge and the Vehicle-to-Grid functions (V2G), the reactive power can be compensated according to an established reactive power reference. A three-phase bidirectional power factor correction (PFC) with a DC link is connected to an isolated DC/DC bidirectional converter is utilized in the topology. The virtual flux control algorithm used in assigning the amount of the injected reactive power is presented in this paper. The required mitigation for this functionality does not require any additional hardware, and it can be implemented on the existing electric vehicles with only a firmware update. Simulation results demonstrate how the reactive power is being compensated and the saturation of the reactive current is used to keep the power under predefined limits.