Comprehensive Dynamic Model Analysis of Proton Exchange Membrane Fuel Cell
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摘要: 为深入研究质子交换膜燃料电池(PEMFC)运行特性,在既有PEMFC实验模型和机理模型相结合的基础上,利用MATLAB/SIMULINK工具建立了包括电压动态模型、氢氧气流供应动态模型和热力学动态模型的PEMFC综合动态模型;分析了不同负载和温度运行条件下PEMFC综合模型的动态特性;搭建了基于Ballard公司1.2 kW NEXA系统的测试平台,并利用测试平台对仿真模型进行了实验验证.研究结果表明:该模型能够较好地反映PEMFC的动态特性;实验与仿真误差:堆电压为2.06%、功率为0.36%,验证了所建模型的正确性.Abstract: For a further study on PEMFC (proton exchange membrane fuel cell) operation characteristics, a synthetic dynamic model with the use of MATLAB/SIMULINK was built on the basis of the combination of the experimental model and the mechanistic model of PEMFC, containing a voltage dynamic model, a hydrogen and air supply dynamic model and a thermal dynamic model. The dynamic characteristics of PEMFC at different loads and temperature conditions were analyzed. A testing platform based on the Ballard's 1.2 kW NEXA system was set up, and with the platform the simulation model was verified by experiments. The research result show that the proposed model can reflect the dynamic characteristics of PEMFC, and the deviations between experimental data and simulation results are 2.06% to stack voltage and 0.36% to power to validate the correctness of the proposed model.
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Key words:
- proton exchange membrane fuel cell /
- dynamic modeling /
- SIMULINK /
- NEXA
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