分布式发电中燃料电池的建模与控制  

Modeling and Control of Fuel Cells in Distributed Generation System

作　　者：丁明[1] 严流进[1] 茆美琴[1] 杨为[1] 

机构地区：[1]教育部光伏系统工程研究中心(合肥工业大学),安徽省合肥市230009

出　　处：《电网技术》2009年第9期8-13,共6页Power System Technology

基　　金：国家863高技术基金项目(2007AA05Z240);国家自然科学基金资助项目(50607002);教育部科学技术研究重大项目(306004)~~

摘　　要：合适的燃料电池(fuel cell,FC)动态模型对分布式发电技术的研究起着很重要的作用。提出了非线性质子交换膜燃料电池和固体氧化物燃料电池的动态模型,该模型考虑了燃料利用率的影响和各种反应物随时间变化的压力。并在该模型的基础上,应用电池效率和发电经济性分析得出了燃料利用率一般控制在0.7～0.9范围内比较好。详细阐述了FC在并网运行时的控制策略,以及在含FC发电系统的潮流计算中,将FC的并网节点当作PV节点来处理。An appropriate dynamic fuel cell （FC） model plays an important part in the study on the distributed generation （DG） technology. The dynamic model of nonlinear proton exchange membrane fuel cell （PEMFC） and that of solid oxide fuel cell （SOFC） are proposed, in which the impact of fuel utilization rate and the time-varying pressure of various reactants are considered. On the basis of these models, according to the efficiency of applied cells and analysis on generation economy, the obtained conclusion is that it is better to control fuel utilization rate within the range from 0.7 to 0.9. In addition, the control strategy of grid-connected FCs is expounded, and in power flow calculation of power grid containing FC generation system the bus where the FC generation sytem is connected with power grid should be regarded as PV node.

关 键 词：分布式发电(DG) 燃料电池(FC) 模型 利用率控制 功率控制 并网 

分 类 号：TM911[电气工程—电力电子与电力传动]