Dynamic Characteristic Modeling and Control of Proton Exchange Membrane Fuel Cell
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摘要: 现有质子交换膜燃料电池(PEMFC)模型难以用于控制系统的设计,为此,提出利用Matlab-Simulink仿真工具建立PEMFC系统动态模型,并在此基础上设计了模糊逻辑控制器(FLC).采用模糊控制和比例积分微分(PID)控制相结合的双模控制,实现了对PEMFC系统输出电压的控制.仿真结果表明,该模型能较好地反映PEMFC系统的动态特性,有助于改进PEMFC的设计,进一步提高其性能;双模控制能有效地抑制扰动,改善PEMFC系统的输出特性,保证系统的稳定运行,证明所建立的控制模型可用于实时控制系统的设计.Abstract: To solve the problem that the current model of proton exchange membrane fuel cell(PEMFC) is hard to be used in the design of control systems,a dynamic model of PEMFC was established with Matlab-Simulink,and a fuzzy logic controller(FLC) was designed based on this dynamic model.The combined application of fuzzy control and proportion-integral-differential(PID) control was adopted to control the output voltage of a PEMFC system.The simulation results show that the established model can reflect the dynamic characteristic of PEMFC systems,and the combined technique of fuzzy control and PID control can restrain the disturbance to improve the output characteristic of PEMFC systems and ensure their stability.The proposed model can be utilized to design the real-time control system of PEMFC.
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