Advancing Onboard Charger Technology with Single-, Split-, and Three-phase Grid Compatibility and New Control Method for the U.S market

As electric vehicle charging requirements grow more complex, this paper addresses the need for onboard chargers that can efficiently operate across single-, split-, and three-phase grids. It introduces a new control method—DPWM-MIN—designed to improve energy efficiency and component durability under unbalanced split-phase conditions, common in North America. The findings demonstrate reduced energy losses, lower hardware costs, and improved system stability, offering a practical path forward for scalable, reliable EV charging infrastructure.