Research on Dynamic Behavior of Electric Vehicle Converter in power network fault

Under the condition of distribution network transient fault, namely power network voltage transient rise and fall and power network reclosing, the dynamic behavior of electric vehicle (EV) charger was studied. Based on the analysis of the circuit topology and system control strategy of EV charger in the power grid, a system simulation model is established to simulate the dynamic behavior of EV charger in different working modes under transient faults such as voltage rise and drop and power grid reclosing. The results show that the power grid transient fault in charging mode has a great impact on the operation of EV charger, while the power grid transient fault in discharging mode has a small impact on the operation of EV charger.