Research on Harmonic Analysis and Harmonic Suppression Measures of Electric Vehicle Charging Station

With the increasing number of electric vehicles, the harmonic pollution of electric vehicle charging stations is becoming more and more serious. It is of great significance to analyze and control the harmonics generated during the charging process of electric vehicles. This paper builds a complete charger (station) model to explore the effects of the number of chargers, the power of the charger, and the initial SOC state on the harmonics. Then APF is introduced to suppress harmonics. The control method adopts the combined control strategy of PI control and repetitive control. The simulation results verify the effectiveness of the proposed method.