Vector Control of Vienna Rectifier for DC Fast Electric Vehicle Supply Equipment

As the demand for electric vehicle (EV) fast charging grows, the role of efficient and grid-friendly power converters becomes crucial in ensuring reliable and high-performance charging systems. The paper presents a control method for an Electric Vehicle Supply Equipment (EVSE) fast charger utilizing a threephase Vienna rectifier (VR) for AC-DC power conversion. VR, increasingly popular in various industrial applications, including EV charging stations, high power density, great efficiency and offer small total harmonic distortion (THD). Through an inner current control loop, the suggested voltage-oriented control technique offers good steady-state performance and fast transient response. In order to effectively manage phase-to-phase coupling, the control structure, which features a dual closed-loop system with voltage as the outer loop and current as the inner loop, uses a feed-forward technique. Also, rectifier-induced voltage imbalances are corrected via the midpoint balance method and a voltage equalization loop. The system’s model is built, simulated, and validated using MATLAB Simulink.