Development Of An AI – Assisted Hysteresis Current Controlled 3-Level Diode Clamped Multilevel Inverter For Three Phase Bidirectional G2V/V2G EV DC Fast Charging Architecture
Keywords:
DC Fast Charging, V2G Operation, G2V Operation, NPC Multilevel Inverter, Buck -Boost Converter, Hysteresis Current Control.Abstract
The rapid growth of electric vehicles has increased the demand for efficient DC fast-charging systems with bidirectional power transfer capability. This study presents a 3-Level Diode Clamped Multilevel Inverter (DCMLI) integrated with AI Assisted Hysteresis Band Current Control (AIHBCC) for Grid-to-Vehicle (G2V) and Vehicle-to-Grid (V2G) operations. The proposed system consists of a three-level NPC inverter, bidirectional DC–DC converter, DC-link capacitor, grid filter, and EV battery. HBCC ensures accurate current tracking, fast dynamic response, and improved power quality, while PLL and PI controllers maintain grid synchronization and DC-link voltage stability. MATLAB/Simulink results demonstrate reduced harmonic distortion, stable DC-link voltage, effective bidirectional energy flow, and enhanced charging/discharging performance. The proposed topology provides an efficient and reliable solution for future smart-grid-integrated EV fast-charging applications.




