Design of Hybrid Power System for Hydrogen Fuel Cell and Electric Vehicle

Hydrogen fuel electric vehicles are the mainstream direction of future automotive development, but the hybrid power system structure of hydrogen fuel electric vehicles is relatively complex, resulting in a shorter battery life and lower energy utilization efficiency in the vehicle’s hybrid power system. In response to this issue, an energy handling solution grounded on minimum equivalent hydrogen consumption is studied and designed to optimize the energy management structure of hybrid power systems. At the same time, the study also proposes improved collaborative control to enhance the converter controller of the hybrid power system. The outcomes show that compared to traditional energy control strategies, the energy handling solution raised in the research can reduce the state of charge fluctuation rate of lithium batteries by 95.07% and the state of charge fluctuation rate of advanced condensers by 0.28%. The energy control strategy designed in the research can decline the hydrogen consumption level of the hybrid power system by 2.29g. The inverter controller designed for research has a basic error of 0 when tracking the current of fuel cells and lithium batteries. The hybrid power system designed for electric vehicles can reduce the hydrogen consumption of electric vehicles, while improving the stability of power output and state of charge, which helps to extend the service life of electric vehicle batteries.