PNVMECA软件计算微型燃机–燃料电池系统变工况性能

Calculating Variable Condition Performance of Micro-Gas Turbine-Fuel Cell System by PNVMECA Software

摘要: 本文采用作者制作的专门软件PNVMECA对系统在电流和燃料流量改变时的稳态性能和动态响应过程进行研究，并设计了合适的变工况控制策略。结果表明通过参数设计实现了燃料电池与燃气轮机的良好匹配运行。在系统额定工况附近，单独调节燃料流量和电流大小，对系统功率调节范围有限。电流增大时，燃料电池功率和系统效率都增加，但燃机功率下降。燃料流量增大时，电池和燃机功率都增大，但系统效率减小。在设计的变工况控制策略下，证明了控制策略的可行性。

Abstract: In this paper, a special software PNVMECA developed by the author is used to study the steady-state performance and dynamic response process of the system when the current and fuel flow change, and a suitable off-design control strategy is designed. The results show that the matching operation between fuel cell and gas turbine is realized by parameter design. The results show that the matching operation between fuel cell and gas turbine is realized by parameter design. In the vicinity of the rated operating conditions of the system, the fuel flow and current can be adjusted separately, and the power regulation range of the system is limited. When the current increases, the fuel cell power and system efficiency increase, but the gas turbine power decreases. With the increase of fuel flow rate, the power of fuel cell and gas engine increases, but the system efficiency decreases. The feasibility of the control strategy is proved under the designed off-design control strategy.