Design Considerations for Magnetic Coupling in Multi-phase Interleaved Boost Converter for Fuel Cell Application

This study reviews various configurations for magnetic coupling in multi-phase interleaved boost converters.. Steady-state modeling and Plecs based simulation models has been developed for different coupling configurations. Interactions between magnetic components and SiC-MOSFETs are examined. Methods are proposed to constrain the design parameters and simplify the system optimization. A scalable 40kW two-phase coupled boost converter based on discrete SiC-MOSFETs has been designed and tested.