燃料电池综合模拟测试研究及软件实现

发布时间：2018-03-05 13:50

本文选题：燃料电池　切入点：测试系统　出处：《电子科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：燃料电池具有能量密度高、操作温度低、对环境无污染、可快速启动及维护方便等优点,在交通运输及分布式发电应用方面具有巨大的潜力,可有效解决能源危机与环境污染问题。然而燃料电池本身涉及复杂的化工反应,内部反应机理复杂,为了研究燃料电池的输出特性,缩短燃料电池的研发周期,提高燃料电池控制精度和使用寿命,降低研发成本,燃料电池测试系统的研发是必需的,具有重要的科研价值和工程意义。因此,本文设计并开发专用的燃料电池测试系统,主要完成以下工作。首先,简单介绍了燃料电池工作原理,明确了燃料电池工作过程。同时对燃料电池工作时的“可逆”开路电压和开路电压影响因素进行分析,确定温度、压力和湿度影响燃料电池输出性能。在介绍了被测燃料电池电堆后,确定燃料电池电堆操作条件,明确燃料电池测试系统功能需求。其次,根据燃料电池测试系统功能需求,确定燃料电池测试系统硬件组成。按照氢气、空气、冷却水、电气和控制回路对测试系统进行模块划分;在确定测试系统组成模块后,对各硬件模块进行详细设计,根据被测燃料电池电堆功率等级,选择各模块执行部件,并整理出各模块监测与控制信号;同时对测试系统数据采集与控制系统进行设计,选择合适的控制器、数据采集卡和传感器,并对系统进行IO分配。然后,根据测试系统硬件模块划分,提出测试系统相应模块软件需求,利用LabVIEW软件设计各模块控制软件。在确定控制模块输入输出后,设计各模块控制流程图,在控制流程图的基础上完成程序框图设计;同时,设计了良好的人机交互界面,可以方便的实现参数设置,燃料电池工作流程查看和数据观测。最后,在测试系统硬件平台上完成本文所设计的测试系统软件功能验证。在介绍了测试系统组成和执行部件后,确定测试系统开机与关机流程,以一维单节分区电池为测试对象,完成不同温度和不同压力下燃料电池输出特性测试,测试结果表明本文所设计测试系统软件具有良好的实用性和可靠性,可完成不同工况下燃料电池输出特性测试。
[Abstract]:Fuel cells have the advantages of high energy density, low operating temperature, no pollution to the environment, quick start-up and easy maintenance, and have great potential in transportation and distributed power generation applications. However, the fuel cell itself involves complex chemical reaction and complex internal reaction mechanism. In order to study the output characteristics of fuel cell and shorten the research and development cycle of fuel cell, To improve the control precision and service life of fuel cell, reduce the cost of research and development, the research and development of fuel cell test system is necessary, which has important scientific research value and engineering significance. Therefore, this paper designs and develops a special fuel cell test system. The main work is as follows. Firstly, the working principle of fuel cell is briefly introduced, and the working process of fuel cell is clarified. At the same time, the influence factors of "reversible" open circuit voltage and open circuit voltage are analyzed, and the temperature is determined. Pressure and humidity affect the output performance of fuel cell. After introducing the fuel cell stack, the operating conditions of the fuel cell stack are determined, and the functional requirements of the fuel cell test system are defined. Secondly, according to the functional requirements of the fuel cell test system, According to hydrogen, air, cooling water, electrical and control circuits, the test system is divided into modules. After determining the components of the test system, the hardware modules are designed in detail. According to the power level of the fuel cell stack under test, the executive parts of each module are selected, and the monitoring and control signals of each module are sorted out. At the same time, the data acquisition and control system of the test system is designed, and the appropriate controller is selected. Data acquisition card and sensor, and I / O distribution of the system. Then, according to the hardware module division of the test system, the software requirements of the test system are put forward. The control software of each module is designed by using LabVIEW software. After determining the input and output of the control module, the control flowchart of each module is designed, and the program block diagram is designed on the basis of the control flowchart, at the same time, a good man-machine interface is designed. Parameter setting, fuel cell workflow view and data observation can be realized conveniently. Finally, the function verification of the test system software designed in this paper is completed on the hardware platform of the test system. Determine the test system startup and shutdown flow, take one-dimensional single-section battery as the test object, complete the fuel cell output characteristic test under different temperature and different pressure, The test results show that the software designed in this paper has good practicability and reliability and can be used to test the output characteristics of fuel cells under different operating conditions.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP311.52;TM911.4

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