5kW燃料电池分布式并网发电系统设计

Design of a 5 kW Distributed Grid-connected Fuel Cell Power System

介绍了5kW质子交换膜燃料电池分布式并网发电系统的结构设计,重点介绍了系统中基于加权平均电流反馈的并网电流控制和能量管理设计,通过实验对设计进行了验证。实验结果表明,该系统可以很好地工作于独立运行和并网运行两种状态,在负载突变时,能量管理单元可以给燃料电池提供动态功率缓冲,保障电池工作安全。

The design of a 5 kW distributed grid-connected proton exehanged membrane （PEM） fuel cell power system is introduced.The system structure and main circuit configuration are given.Then the control design based on weighted average eurrent feedback for grid eurrent eontrol and the design of the energy management unit are introduced.Finally,the experimental results upon a prototype are given to verify the design.From the experimental results, we know !hat the proposed system can operate well under both stand-alone and grid-connected modes.The fuel cell safety can be guaranteed by the energy management unit by compensating the dynamic power during load transition.