【作者】 周文；

【导师】 李曦；

【作者基本信息】 华中科技大学 ， 控制理论与控制工程， 2009， 硕士

【摘要】 由于不断增加的能源消耗,公众环保意识的逐步增强,可再生能源发电正逐步迈入人们的视线。光伏发电是目前最有前途的可再生能源发电技术之一。燃料电池系统凭借其技术的快速发展和其拥有的诸多优点,比如高效率,零废气排放,和灵活的模块化结构,同样在可再生能源发电领域中有着极大地潜力。当今社会是一个以电力为主要能源的社会,利用光能和燃料电池两者的优点及其互补特性建立起光伏燃料电池联合发电系统,对解决世界能源危机以及我国部分山区的电力供应问题有着及其重要的意义。太阳能燃料电池联合使用实际上是太阳能-氢能-燃料电池-电能-用户的能量输送链。由于国内关于固体氧化物燃料电池的研究仍处于起步阶段,将固体氧化物燃料电池和光伏发电相结合构成联合系统更是在能量输送链上存在许多难点需要攻克,比如太阳能燃料电池联合发电系统的设计原则和设计依据;光伏系统中的最大功率点跟踪问题;电解槽类型的选择;电能的存储方式;PVFC联合发电系统匹配设计;负载的能量需求特点;系统结构设计及其能量管理。本文主要在联合系统产生能量,储存能量和整体能量的管理上做了大量研究工作,其主要有以下特点:1)在分析了光伏发电,燃料电池发电的工作原理和内部结构后,建立了光伏电池的数学模型,并在该模型的基础上研究如何增大其输出功率的方法,即最大功率跟踪法。2)以STC12C2052AD单片机为控制芯片,设计了一个联合发电系统充电环节的控制器,包括硬件部分及软件部分。3)分析了联合发电系统的组成和构造,搭建了联合发电系统各模块的数学模型,包括(电解槽,SOFC,储氢罐等)并在此模型的基础上研究了联合发电系统内部的各种能量,实现了一种有效地能量管理方式。更多还原

【Abstract】 Due to ever increasing energy consumption, rising public awareness of environmental protection, alternative distributed generation systems have attracted increased interest. Photovoltaic (PV) power generation is one of the most promising renewable energy technologies. Fuel cell (FC) systems also show great potential in distributed generation applications of the future due to their fast technology development and many merits they have, such as high efficiency, zero or low emission (of pollutant gases) and flexible modular structure. The world today is a world highly depends on electricity. The hybrid photovoltaic SOFC distributed generation systems ,which are consist of many advantages of both PV and SOFC ,are very significant to solve the world energy crisis, as well as parts of the mountain areas of China’s electricity supply issues .The solar fuel cell hybrid generation is actually an energy transport chain as solar-hydrogen-fuel cell-electric power-user. The solid oxide fuel cell research is still in its infancy stage in China. Even in the world, very little research has been done to combine photovoltaic with SOFC. So lots of difficulties needs to be overcome on the energy transport chain of hybrid generation systems.The characteristics of this thesis are as follows: 1.Based on the analysis of working principle and the internal structure of the photovoltaic power generation and the SOFC ,a mathematical model was established. Using this model, a method was studied on how to increase the output power of the system, which is called the maximum power tracking method.2. The charging part’s controller of the hybrid power generation system was designed using the STC12C2052AD MCU, including the hardware and the software design. 3. The composition of the hybrid generation system was analyzed and the model (such as electrolyzer, hydrogen storage tanks , etc.) of the system were built to study various energy in the system. An effective energy management was achieved at the end.更多还原