Development Of Measurement And Control System Of Proton Exchange Membrane Fuel Cell And Study Of PEMFC Performance

In recent years,environmental pollution and energy consumption caused by economic development have attracted wide attention.It the rule of human existence for developing vigorously green energy,clean energy,rational utilization of energy and protecting environment.In 2016,National Development and Reform Commission(NDRC)in “the energy technology innovation action plan” indicated that commercialization of hydrogen energy will be realized in 2030.And it is the inevitable trend of energy development for the efficient use of hydrogen energy in the future period.Proton Exchange Membrane Fuel Cells(hereinafter referred to as PEMFC),as a new,clean and high-efficiency power conversion device,is widely used in portable power supply,fast charging pile,new energy vehicle,military and communication field etc.In this paper,Firstly,a lumped parameter model is established for a 400 W PEMFC stack with air-cooled,then through the analysis of the operating parameters that affect the output performance using the software Matlab/Simlink,as a result,the control parameters and the control scope of this control system are determined;Secondly,the hardware platform of PEMFC is designed and constructed.Based on the platform,it has developed a set of software of measurement and control system for PEMFC;Finally,the performance test of a 400 W air-cooled PEMFC battery is completed in the control platform,it verifies the validity of PEMFC measurement and control system.The main work completed in this paper is as follows:(1)a lumped parameter model of 400 W air cooling type PEMFC battery was established,through the simulation analysis of operating parameters affecting the output performance of the fuel cell,the control parameters and scope for the system are determined,including stack temperature,inlet pressure,current load and the anode exhaust cycle etc.(2)the temperature control strategy of fuel cell is proposed based on the "reciprocating flow" forced heat dissipation mode and the fuzzy adaptive PID control strategy.Through comparison experiment between reciprocating flow and one-way flow,it is verified that reciprocating flow has better performance than the one-way flow,it can balance battery stack temperature and optimize output performance of fuel cell.It is obvious that fuzzy adaptive PID can follow temperature well according to the simulation analysis.(3)Based on the functional and technical analysis of measurement and control systemwith air cooled PEMFC stack.Then the construction scheme of the hardware platform of the measurement and control system is given,and the selection,assembly and debugging of the parts are completed.Therefore,the hardware platform of measurement and control system with air cooled PEMFC stack is established.(4)based on the hardware platform of the air cooled PEMFC stack measurement and control system,a set of measurement and control system is developed.The Data Acquisition Card(DAC)and Single Chip Microcomputer(DCM)are used to complete the parameter acquisition and control of the measurement and control system.Based on the software LabVIEW,we have completed the design of the login system and measurement and control interface software of the measurement and control system.(5)it has been completed a 400 W stack steady performance test using the system,including Current-Voltage(I-V)curve,the Current-Power curve(I-P),single cell Voltage test,open-loop Voltage test and it can verify the validity of measurement and control system;the reciprocating flow forced cooling strategy is better than the traditional one-way flow cooling by experiment,it can balance the fuel cell temperature and improve the cell stack output performance.