Simulation model of three-phase PWM rectifier charging station and harmonic analysis on grid

Electric vehicles are not only the random loads, but also the distributed generation, and their charging and discharging behaviors have great influence on the grid operation. This paper establishes a simulation model of an electric vehicle charger, which consists of three-phase voltage-source PWM rectifier and bidirectional DC/DC power converter, and puts control strategy to realize the electric vehicles constant current constant voltage charging process as well as constant current discharging process. It also analyzes the harmonic distortion and power factor change process. Finally, harmonic simulation analysis is carried out considering the charging and discharging behavior of EVs in a community within 24 hours. By this example demonstrates the practicability and correctness of the model.