Power management and economic estimation of fuel cell hybrid vehicle using fuzzy logic

Fuel cell hybrid vehicles (FCHVs) have been attracting a lot of attention as well as electric vehicles (EVs) and various hybrid electric vehicles (HEVs) for environmental issues and energy crises. One of the advantages of using foregoing vehicles is saving energy during electric motor's braking regeneration. In this paper, a fuzzy logic based power management strategy considering a regenerative braking control of the electric motor is presented for proton exchange membrane (PEM) fuel cell and Nickel-Metal Hydride (Ni-MH) battery hybrid vehicular power system. The fuel economic of the FCHV is estimated by analyzing the fuel consumption of hydrogen usages. Simulation results show that the fuel economic is improved by using the proposed fuzzy logic controller for regenerative braking management.