PROJECT TITLE :

Design and Control of Fault-Tolerant Nonisolated Multiphase Multilevel DC–DC Converters for Automotive Power Systems

ABSTRACT:

During this paper, a bidirectional, nonisolated dc-dc converter with many interleaved phases of multilevel modules for dual low-voltage automotive power systems is presented. Instead of employing a 2-level stage with short-circuit protection elements, a three-level module during a multiphase structure is proposed to attain improved fault-tolerance. The dimensioning of the required flying capacitor for multilevel dc-dc converters is described. Any, benefits like ripple reduction, automatic fault current limitation, and enhanced potency are achieved. Moreover, the management strategy for traditional operation together with the soundness of the flying capacitor voltage along with reconfiguration after semiconductor open- and short-circuit failure for ongoing degraded operation are explained.