Study of a 6-Leg Floating Interleaved Boost Converter with Coupled Inductors for Fuel Cell Heavy-Duty Electric Vehicles

The transition to sustainable transportation has positioned hydrogen fuel cells as a key solution for heavy-duty vehicles, offering high efficiency, sustained power output, and rapid refueling capabilities. DC-DC power converters play a crucial role in adapting the fuel cell’s output voltage to meet vehicular requirements. This paper compares three converter topologies: the threephase interleaved boost converter (3-IBC), its coupledinductor version, and the six-leg floating interleaved boost converter with coupled inductors (FIBCCI-6L). MATLAB/Simulink simulations assess current ripple performance, highlighting trade-offs in efficiency and component size for heavy-duty fuel cell applications.