Optimized Power Management for Fuel Cells Electrical Vehicles Using High Step-Up Converter

Abstract This paper proposes a new DC-DC converter at the front-end of the powertrain of FCVs which offers a high step-up voltage gain with low voltage stress. Battery systems of FCEVs supply a high voltage alternating current (AC) output while fuel cell systems in FCVs output low-voltage DC. In adopting electric drivetrains there is need to have efficient voltage conversion for the high voltage needed.. Conventional topology converters can often fail to provide the required voltage boost while also experiencing heavy efficiency degradation together with voltage stress affecting the elements of the converter’s circuit, which can reduce its reliability and shorten its lifespan. The converters’ TLO operating principles and performance indicators are comprehensively explored and analytically quantified using mathematical modeling. The findings of the study’s simulation support the theoretical propositions and highlight that the converter can deliver greater than tenfold string voltage gain while reducing the voltage stress on semiconductor switching devices and diodes. Since the DC-DC converter maintain a constant output voltage, is cheap, easy to construct, and has an efficiency of over 95% it is suitable for many FCV applications. It provides useful procedure for enhancing the efficiency and lifespan of FCVs through achieving high voltage and low stress conversion.