摘要
对为建筑提供热电联供的60 kW PEMFC分布式发电系统进行研究,并根据物质的动态流动和电化学反应过程建立了发电系统模型,针对系统对发电效率和稳定运行的要求,以及多参数非线性强动态耦合的特点,对系统的控制设计不再强调某个参数,而是着眼于整个系统的协调运行。模拟15个家庭一天典型的电能需求进行了系统的动态仿真实验,实验结果说明,提出的系统控制方案可行,工作点的优化搜索能够使系统良好的响应实时负载,单神经元PI解耦控制器则使系统始终在理想的压力和湿度条件下稳定运行。这些将为系统的进一步优化设计和开发应用提供指导。
A study has been conducted for a 60 kW PEMFC(proton exchange membrane fuel cell) distributed power generation system,which provides electricity and heat energy for architectural buildings.A power generation system model was established based on the dynamic flow of masses and an electrochemical reaction process.To meet the requirements of the system for power generation efficiency and stable operation and to take into account the specific features of multi-parameter nonlinear and firm dynamic coupling,during the control design of the system,one will no longer focus on a specific parameter,but pay close attention to the coordinated operation of the system as a whole.Through the simulation of the typical power demand of fifteen families in a day a dynamic simulation test was performed of the system.The results of the test indicate that the proposed control scheme for the system is feasible and an optimal search of the working points enables the system to response adequately to a real-time loading.Moreover,single neuron-element PI decoupling controllers can at all times ensure a stable operation of the system under ideal pressures and humidity conditions.All the above can serve as a guide for the further design optimization of the system as well as for its development and applications.
出处
《热能动力工程》
EI
CAS
CSCD
北大核心
2006年第1期75-79,95,共6页
Journal of Engineering for Thermal Energy and Power
基金
国家"863"计划发展基金资助项目(2002AA517020)
