In order to meet the increasing need for vehicular load, a definite tendency in the automobile industry towards using more electronic systems will be always there. Therefore, it’s essential that vehicle electronic systems undergo a significant transformation in the upcoming years. The current state of the automobile market is such that increased fuel efficiency and electric power consumption are pushing the voltage of sophisticated vehicular power systems to higher levels. This paper discussed the operation of the Fuel Cell Vehicle (FCV) system and the uses of different power electronic modules for the generation of high voltage for the mobility of vehicles. But some problems are there, majorly when current is suddenly drawn from the electric load associated to the Fuel Cell (FC) Source, the FC control algorithm must have to maintain membrane hydration, optimal temperature, and partial pressure of reactant across the membrane to avoid unfavorable degradation of FC voltage, which will help in efficiency reduction. To maintain the temperature and pressure feedforward and feedback, PI controllers have been developed.