Analysis And Design Of Automobile Power System For Hydrogen-Fuel And Photovoltaic Cell

Nowadays,fossil fuel energy is decreasing day by day and energy is facing a crisis.As we all know,the level of modern industrial development in a country is mainly reflected in several industries,among which the automobile industry is an important link and has a great impact on the national economy at the same time.Automobile industry is very dependent on oil resources,the development of renewable resources has become a hot.The hot trend of the automobile industry is the new energy vehicle,and the pure electric vehicle technology in the new energy vehicle has developed to the bottleneck stage.It is difficult to have great technological innovation for the time being,but the technology of photovoltaic cell vehicle and fuel cell vehicle has not been developed.Is the best direction of development.On the basis of the working principle and output characteristics of fuel cell and photovoltaic cell,the mathematical modeling is carried out,and then a variety of DC/DC converters are compared and analyzed.Finally,two-way full-bridge DC/DC converter is selected as a part of system control.The forward working mode is controlled by traditional phase shift and the transmission power is analyzed.Considering the normal operation of the automobile,the permanent magnet synchronous motor is selected to analyze the structure of its rotor and establish a mathematical model.The energy control theory of hydrogen fuel cell and photovoltaic cell is analyzed and studied,and the coordinated control and energy management,that is,hierarchical energy management strategy,is designed.The upper energy management strategy is for hydrogen fuel cells and batteries,and the lower energy management strategy is for photovoltaic cells and batteries.According to the rated power of photovoltaic cells and batteries,it can meet the normal needs of the vehicle.By using matlab/simulink software,the mathematical model is modeled and simulated,and the vehicle power system model of hydrogen fuel photovoltaic cell is established.The first is to connect the battery to the circuit to supply power to the driving motor,and the simulation results show that the test is successful.The final simulation results of the above four conditions prove to be feasible.