Research On Modeling Simulation And Characteristic Of Proton Exchange Membrane Fuel Cell For Vehicle

In recent years,with increasing world population environmental pollution,over-exploitation and so forth,human beings has already ran out of the traditional energy.Due to the extensive use of traditional energy,nature's self-regulation capacity has exceeded its maximum load,resulting in a series of environment pollution on problems.Therefore,it's imperative for people to make great effort to develop and use new,renewable energy.And in the use of hydrogen,the performance of the fuel cell technology is more outstanding.This paper mainly focuses on the steady/dynamic state and cathode/anode modeling of the proton exchange membrane fuel cell(PEMFC)anode and the static and dynamic modeling.On this basis,to explore the influence of temperature,air pressure,current density,and humidifying electrode on the performance of PEMFC output.The main researches and achievements are as follows:(1)The operating principle and structure of PEMFC is described.And the simulation of PEMFC is presented,in order to putting forward the research emphasis of this paper.(2)Based on Matlab/Simulink platform,the steady state simulation of the PEMFC is established.Moreover,the output performance of fuel cell on cell temperature and cathode/anode air pressure is analyzed.At the same time,the simulation data is obtained by the linear regression of the simulation data inflection point or the peak value.The corresponding linear regression equation can provide theoretical support for further study of battery performance.(3)The durability of the PEMFC under the condition of high current density is researched.Compared with the corresponding experimental data,although the simulation value has certain error with the experimental values,satisfactory results are obtained in the error range.(4)The GUI interface is designed based on the development environment of GUIDE in Matlab,which provides a universal interface model for the simulation of fuel cell performance.(5)The dynamic model of the PEMFC is established in order to discuss the dynamic response.It provides a theoretical basis for further experimental study.(6)The cathode and anode flow model of PEMFC to get the cell poles on both sides effective hydrogen and oxygen partial pressure of cathode/anode is established,indicating dynamic performance of different degrees and different prominent humidifying anode total pressure under the condition of PEMFC.The modeling and simulation research of this paper provides a theoretical basis for the further study of PEMFC experiment and simulation.The newly designed GUI interface provides a universal interface model for the study of other performance of the fuel cell,which provides a convenient tool for similar research.