大功率质子交换膜燃料电池建模及仿真

MODELING AND SIMULATION OF HIGH-POWER PROTON EXCHANGE MEMBRANE FUEL CELLS

针对70 kW大功率燃料电池系统进行建模,基于Simulink平台搭建质子交换膜燃料电池电堆系统模型。基于该模型在稳态下研究温度、膜含水量、压力对电池输出性能的影响,分析水气跨膜运输情况。仿真结果表明电流密度在0.4~1.0 A/cm范围内时,电堆输出电压保持稳定。然后在新欧洲驾驶循环(NEDC)动态工况下,分析电池系统输出性能和水气跨膜传输情况,结果表明所建模型可用于大功率车用PEMFC研究。

Proton exchange membrane fuel cells(PEMFC)are efficient and environmentally friendly energy conversion devices with broad application prospects in multiple fields.To achieve stable and reliable operation of high-power vehicle-mounted PEMFC systems,this study focuses on modeling a 70 kW high-power fuel cell system,a model of proton exchange membrane fuel cells(PEMFC)system was proposed based on the Simulink platform.With the proposed system model,the effects of temperature,membrane water content and pressure on the output performance of PEMFC were studied under the steady state,and the transmembrane transport of water and gas was analyzed.Simulation results indicate that the stack output voltage remains stable when the current density is within the range of 0.4-1.0 A/cm2.The dynamic condition of NEDC was also applied and analyzed.The results show that the proposed model can be used in studying high-power PEMFC for automotives.