光伏燃料电池系统的研究与实现

发布时间：2018-12-17 12:00

【摘要】：随着社会的迅速发展,能源和环境的危机越来越严重,这种现象使得人们对新能源的研究和利用迫在眉睫。近些年,太阳能的应用比较广泛,但是光伏发电有一定的缺点,当光照强度不足或者阴雨天时,就会严重影响到光伏电池发电,这会对它的应用带来相当大的阻碍。合理地将燃料电池和光伏电池组合使用,可以在光照强度连续低于平均值的时候,使光伏电池的输出曲线不会出现较大的波动。因此,使光伏燃料电池系统高效工作将作为这一项研究的重中之重。当前,我国在光伏发电方面的应用已经非常成熟,关于燃料电池的科学研究也日益完善,而对光伏燃料电池系统的研究还处于仿真模拟阶段。本文主要对光伏燃料电池系统及其子系统进行特性分析及研究,为利用光伏燃料电池提供了一定的理论基础。本文开篇阐述了光伏电池的基本理论,比较了制取氢气的几种常用方法的优缺点,从中选择电解水制氢气的方法,同时介绍了其反应原理及过程。列出几种H2存储途径,以及燃料电池的基本原理和反应过程,然后介绍了光伏电池等效电路模型以及带有最大功率跟踪(MPPT)的光伏电池发电系统、水电解槽的数学模型和燃料电池的电化学模型。根据各模块的等效关系和数学模型,在Matlab软件中搭建稳态和动态仿真模型,得出各子系统输出特性的影响因素,并进行性能分析和研究。根据燃料电池容量需求设置具体参数,分析整个模型的仿真结果并得出使系统高效工作的氢气流量值,完成对光伏燃料电池系统的理论研究与实现。
[Abstract]:With the rapid development of society, the crisis of energy and environment is becoming more and more serious. In recent years, solar energy is widely used, but photovoltaic power generation has some shortcomings, when the light intensity is insufficient or rainy, it will seriously affect the photovoltaic cell power generation, which will bring considerable obstacles to its application. The reasonable combination of fuel cell and photovoltaic cell can keep the output curve of photovoltaic cell from fluctuating when the light intensity is continuously lower than the average value. Therefore, making photovoltaic fuel cell system efficient will be the top priority of this research. At present, the application of photovoltaic power generation in China has been very mature, the scientific research on fuel cells is increasingly perfect, and the research on photovoltaic fuel cell system is still in the simulation stage. In this paper, the characteristics of photovoltaic fuel cell system and its sub-system are analyzed and studied, which provides a theoretical basis for the use of photovoltaic fuel cell. At the beginning of this paper, the basic theory of photovoltaic cell is described, the advantages and disadvantages of several common methods for hydrogen production are compared, the method of electrolyzing water to produce hydrogen is selected, and the reaction principle and process are introduced. This paper lists several ways of H _ 2 storage, as well as the basic principle and reaction process of fuel cell, then introduces the equivalent circuit model of photovoltaic cell and the photovoltaic power generation system with maximum power tracking (MPPT). Mathematical model of water electrolysis cell and electrochemical model of fuel cell. According to the equivalent relation and mathematical model of each module, the steady and dynamic simulation models are built in Matlab software, and the factors influencing the output characteristics of each subsystem are obtained, and the performance analysis and research are carried out. According to the capacity requirements of the fuel cell, the specific parameters are set up, the simulation results of the whole model are analyzed, and the hydrogen flow rate of the system is obtained. The theoretical research and implementation of the photovoltaic fuel cell system are completed.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM911.4

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