Modeling and Control Design of Interleaved Totem Pole PFC AC/DC Converter for Electric Vehicle On-Board Chargers OBC

This article introduces the modeling and control design of an Interleaved Totem Pole (ITP) Power Factor Correction (PFC) AC/DC converter intended for use in the context of wireless power transfer (WPT) chargers designed for electric vehicles (EVs),based on SIC MOSFET.This converter is employed at 85 kHz in CCM. The main objectives of this research are system modeling, design of control strategies to ensure the global stability, equal sharing between the two parallel legs, and improvement of Total Harmonic Distortion (THD). To achieve these objectives, the system dynamic behavior of the AC/DC interleaved totem pole PFC converter was modeled using mathematical equations and the state space equations. A PI control strategy was then designed to ensure the stability regulation in output voltage and ensuring the PFC power transfer during grid to vehicle G2V modes. The suggested control method underwent testing and validated using MATLAB/Simulink software. The simulation results obtained demonstrating its effectiveness in achieving the desired objectives. The results of this study contribute to the development of advanced control techniques for AC/DC interleaved totem pole PFC converters, improving the reliability and efficiency of power conversion systems.