中国电机工程学报2012，Vol.32Issue(z1)：108-114,7.
固体氧化物燃料电池分布式电源最大效率并网运行方式分析
Analysis of the Maximum Efficiency Operating Scheme for an Solid Oxide Fuel Cell Distributed Generator in a Grid-connected System
摘要
Abstract
The maximum efficiency control scheme for a solid oxide fuel cell (SOFC) distributed generator (DG) in the grid-connected condition was proposed. By introducing the steady-state equations which govern the complex electrochemistry, thennodynamic and electrical processes of the SOFC DG, the relationship between the AC and DC sides of the SOFC DG was established. Analyses indicate that the control variables of the power conditioning unit are dependant of the control variables of the cell stack if the constant unity power factor operating scheme for the SOFC DG is chosen. However, the operating states of the SOFC DG under this control scheme must be subjected to the operating constraints denoted as feasible operating space (FOS). The non-linear programming method was then used to determine the maximum efficiency and the optimal control variables. Simulation results show that the SOFC DG under the maximum efficiency should maintain three DC-side operating variables constant simultaneously, namely, fuel utilization factor, excess oxygen ratio and stack operating temperature.关键词
电气效率/合理运行空间/并网运行/固体氧化物燃料电池Key words
electrical efficiency/ feasible operating space/ grid-connected system/ solid oxide fuel cell (SOFC)分类
信息技术与安全科学引用本文复制引用
李勇汇,冉兵,朱海昱..固体氧化物燃料电池分布式电源最大效率并网运行方式分析[J].中国电机工程学报,2012,32(z1):108-114,7.基金项目
国家自然科学基金项目(50977067). （50977067）
