Independent Control of Reactive Power in Single-Phase V2G Charger

Abstract

With the popularity of electric vehicles, the interaction between the electric vehicle and the power grid will be more and more in-depth. Household power supply system usually a single phase system, instantaneous reactive power theory can't be applied directly in the single-phase charger to achieve independent control of reactive power, when the charging quantity is large enough, the impact on the power grid will not be ignored. in order to overcome the problem of independent control of reactive power, a virtual coordinate system is constructed and two coordinate transformations are added in the control link, combined with the instantaneous power theory, independent control of reactive power in single-Phase V2G charger is realized, power quality of distribution network can be improved when the system needs for local compensation.