燃料电池–高压压气机–涡轮系统仿真计算

Simulation and Calculation of Fuel Cell-High Pressure Compressor-Turbine System

燃料电池是一种将化学能转化为电能的高效、绿色无污染装置。为研究温度及氧气过量系数对燃料电池输出性能的影响以及阴极尾气余压的回收对系统效率的影响,本文设计了一种燃料电池–高压比压气机–涡轮系统对电池的阴极进行供气及对尾气进行回收,并采用Simulink软件对系统建立模型后进行仿真计算。根据仿真结果表明:提高温度以及增大氧气过量系数会使得PEMFC的输出性能得到提升;阴极尾气的回收有助于提高电池的输出效率。这对燃料电池的系统设计具有一定的指导意义。

The fuel cell is a highly efficient,green,non-polluting device that converts chemical energy into electrical energy.In order to study the influence of temperature and oxygen excess ration on fuel cell output performance,this paper designed a high-pressure specific compressor-turbine device for providing air to the cathode of the fuel cell and recovering exhaust gas.The model was built and simulated by Simulink software.According to the simulation results,it can be shown that increasing the temperature and oxygen excess ratio can improve the output performance of the fuel cell.This has certain guiding significance for the system design of the fuel cell.