A New Integrated Battery Charger (IBC) Architecture for 1200 V Electric Vehicles

The concept of Integrated Battery Charging (IBC) has garnered considerable interest in the realm of electric vehicles (EVs). This technology leverages existing vehicle hardware for the on-board charging (OBC) function, significantly reducing the total cost and volume of power electronics within an EV. The present work proposes a system-level architecture and model predictive control (MPC) of the IBC based on an active neutral point clamped (ANPC) converter for a 1200-volt EV application. Such high-voltage battery EVs are increasingly favored for their potential benefits, including enhanced charging speed, increased power delivery, and improved efficiency, particularly in high-performance and specialized vehicle segments. Model predictive control is designed for both the battery charging (OBC)/vehicle-to-grid (V2G) and traction modes of operation. Finally, the proposed IBC is modeled in MATLAB/PLECS software for a charging power of 11 kW/bank and 250 kW during the traction mode, and the design is validated.