文档介绍:华中科技大学硕士学位论文
摘要
随着环境污染,能源短缺的问题的日益严重,燃料电池发电系统逐步受到人们
的重视,其中最有发展前景的是固体氧化物燃料电池。而目前国内外的研究大多局
限于电堆内部材料、结构等方面,外围控制未受到重视,这也是其广泛应用的瓶颈
问题之一。如何运用控制技术综合管理好系统的热、电,保证其工作正常,满足用
户负载对电能的需要,是个很有意义的研究方向。
由于燃料电池对负载的响应较慢,这就需要一个辅助电源装置进行实时的负载
跟踪, 解决由此引发的燃料亏空问题,从而保证系统安全。如何协调好二者的工作
就需要一个较为先进合理的控制算法。系统设计完成后,需要在硬件平台上进行测
试,完成整个控制系统。而燃料电池发电系统的控制离不开控制器技术,以 32 位高
端微控制器为核心的电子控制单元的设计是一个难点。整个论文的研究就是以此为
背景展开的。
本论文主要完成的工作有:1)设计了燃料电池超级电容联合系统,满足负载
跟踪的实时性要求,在 Matlab/simulink 环境下搭建了系统仿真模型;2)运用模型预
测控制算法,设计了控制器,协同管理燃料电池和超级电容;3)设计了以 MPC555
微控制芯片为核心的硬件平台,拓展了存储空间,预留下丰富的输入输出端口。考
虑电磁兼容性制作 PCB 电路板;4)运用 RCP 技术,自动生成控制代码,基于半实
物仿真平台进行测试,并对结果对比分析。
关键词:电子控制单元(ECU) 能量管理超级电容建模仿真模型预测控制
(MPC)
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华中科技大学硕士学位论文
Abstract
As the problems of environmental pollution and energy shortage ing more and
more serious, people pay more attention to fuel cells, one of the most prospects is solid
oxide fuel cells. At present, domestic and foreign researches mainly focus on internal
stack material, structure, etc., external control is not taken seriously, which is the
bottleneck problem of application. How to manage the heat, electricity of the system, and
ensure it to satisfy the need of load, is a very meaningful research direction.
Because the fuel cell responses slowly to load, an auxiliary power supply device is in
need, which can do better in real-time load tracking, and solve the problem of fuel deficit
in order to ensure system security. How to coordinate the work requires a more advanced
and reasonable control algorithm. After the system pleted, it should be tested
on hardware platform. We cannot finish the whole control system without controller
technology. Therefore, designing an electronic control unit with a 32-bit advanced core is
a difficulty. The whole thesis research is lunched based on this background.
The main tasks of this thesis are as follows: 1) Design the fuel cell/ ultracapacitor
hybrid system, which can satisfy the requirements of real-time load t