A laboratory-scale passive hybrid power system for transportation applications is constructed and tested in this study …. The hybrid power system consists of a fuel cell stack connected with a diode, a lithium-ion battery pack connected with a … hybrid power system is attributed to the diodes. The power train efficiency can be improved by lowering the ratio of forward …

establishes dynamic models for the ultracapacitor, the battery and a passive hybrid power system, and then based on the dynamic … models a comparative simulation between a battery only power system and the proposed hybrid power system was done under the … UDDS (Urban Dynamometer Driving Schedule). The simulation results showed that the hybrid power system could greatly …