摘要质子交换膜燃料电池（Proton Exchange Membrane Fuel Cell，PEMFC）因为其具有运行温度低、功率密度高、启动快等特点，拥有良好的市场应用前景。因此，建立准确的输出特性模型和选择合适的控制方法对于深入的分析质子交换膜燃料电池性能，提高系统发电效率有十分重要的意义。85037

本文基于PEMFC电化学模型，基于阴、阳极气体扩散方程，建立了PEMFC输出电压模型。同时基于所建立的模型，设计了模型参考自适应控制器，实现了对PEMFC输出电压的控制。论文主要内容如下：

（1）研究了质子交换膜燃料电池的电化学反应过程，基于电化学与热力学理论建立了PEMFC的输出电特性模型与等效电路模型。

（2）基于所建立的PEMFC输出电特性模型，研究了负载电流、氢气流量等对PEMFC输出电特性的影响。仿真结果表明本文所建立的PEMFC输出电特性模型，可以准确的描绘PEMFC电压输出特性。

（3）基于所建立的PEMFC输出电压模型，引入了模型参考自适应控制算法，应用MIT方案设计了自适应控制律，建立了PEMFC输出电压的控制系统。仿真结果表明所设计了MRAC控制器可以取得较好的控制效果。

毕业论文关键词  质子交换膜燃料电池  建模  仿真  模型参考自适应控制

毕业设计说明书外文摘要

Title  The proton exchange membrane fuel cell’s MRAC controller    design based on Matlab                                                               

Abstract Proton exchange membrane fuel cell has good market application prospect for its low operating temperature, high power density, quick start,and etc。Establishing accurate output characteristic model and, therefore, choosing suitable control method for in-depth analysis of proton exchange membrane fuel cell performance,  have the very vital significance on improving the efficiency of power generation system。 

Based on the electrochemical model of PEMFC and the cathode and anode gas diffusion equation, the output voltage of PEMFC model is established。And ,model reference adaptive controller was designed and realized to control the output voltage of PEMFC based on the established model。Paper main contents are as follows:

(1)The electrochemical reaction process of the PEMFC was studied, and the output electric characteristic model and the equivalent circuit model of PEMFC were established based on the theory of electrochemistry and thermodynamics。

(2)Based on the established PEMFC output electrical characteristics model, the effects of load current and hydrogen flow rate on the electrical characteristics of PEMFC were investigated。 The simulation results show that the PEMFC output electric characteristic model is established in this paper, which can accurately describe the characteristics of PEMFC voltage output。

(3)Based on the established PEMFC output voltage model, a model reference adaptive control algorithm is introduced, and an adaptive control law is designed by using the MIT scheme to establish the control system of the PEMFC output voltage。 The simulation results show that the MRAC controller can get better control effect。

Keywords  PEMFC  modeling  simulation  MRAC

目   次

1  绪论 1

1。1  引言 1

1。2  PEMFC的发展历史 1

1。3  PEMFC建模和控制的研究现状 2

1。4  论文主要研究内容