Temperature Control Strategy And Optimization Of Proton Exchange Membrane Fuel Cell

Temperature Control Strategy and Optimization of Proton Exchange Membrane Fuel Cell Currently facing energy crisis and environmental pollution,laws and regulations are becoming more stringent to deal with this situation.In order to find an alternative fuel,pollution-free,and energy-efficient energy to replace gasoline,proton exchange The membrane fuel cell(Proton Exchange Membrane Fuel Cell,PEMFC)came into being.Its outstanding characteristics of high efficiency,high energy,low noise,low emission and low working temperature have turn into the main choices for this alternative.Therefore,a large number of scholars at home and abroad have conducted research on this aspect to meet the needs of more scenarios.,So as to solve the problems of energy crisis and environmental pollution.During the working process of proton exchange membrane fuel cell,its performance will be affected by the fuel cell system and the external environment,in which the operating temperature of the fuel cell is one of the most important parameters,the temperature control is directly determined by the performance of the fuel cell,fuel cell The best performance corresponds to a best working temperature,in order to keep the temperature in this range,a good temperature control system plays a crucial role.This article studies the temperature control strategy of fuel cells in this paper,and the main contents are as follows:First of all,its output performance of fuel cell tests,design the current density(load)as a substation performance experiment of output parameters obtained in hydrogen gas,air humidity and a hydrogen inlet pressure and current density of air inlet pressure along with the change of voltage and power relations,the curve of voltage and current density for the polarization curve,Then a voltage model can be built,through which the electrical efficiency and output heat can be obtained.Based on the output heat,the output heat can be lost faster and more timely.In order to achieve accurate control of fuel cell stack temperature,an accurate proton exchange membrane fuel cell model is essential.Based on Matlab/Simulink software platform,the fuel cell heat generation model,heat dissipation model,circulating water pump model and heat dissipation fan model are established respectively.On this basis,a temperature control system is established to control the temperature of fuel cell.In this paper,the research focuses on the temperature control strategy of fuel cells,and a variety of control strategies are summarized on the basis of literature,and the purpose is to find better control to optimize the fuel cell.It is proposed to control both control objects of the heat dissipation fan and the circulating cooling water pump.The heat sink is used to control two control strategies of PID control and fuzzy PID.The circulating cooling water pump is controlled by two control strategies of PID control and fuzzy PID.The design process of the class method is described in detail,thereby combining an optimal thermal management control strategy.On the basis of completing the heat management system,the example analysis is deployed,and the robustness,anti-interference capability,response rate,and follow-up effects of the model under different conditions are tested,and the disturbance conditions are performed,and multiple steps are performed.Test of working conditions and circular conditions to test fuel cell performance and complete optimization and improvement work based on traditional PID temperature control strategy.