摘要
该文通过建立等效电路模型研究质子交换膜(PEM)燃料电池动态变载过程的电压响应。将电池内部发电过程等效为电压源,将电池内部的活化极化损失、Ohm极化损失和浓差极化损失分别等效为活化损失电阻、Ohm损失电阻和浓差损失电阻。建立数学模型,利用Matlab对燃料电池的变载过程的电压动态响应进行模拟仿真,并将仿真结果与单片电池试验结果进行了对比。结果表明:模型计算结果与试验结果有较好的吻合,验证了模型的准确性和可行性。利用该模型进行了大幅度变载过程电压响应预测,观察到了加载过程电压的下冲现象和电压的反极现象。该模型可用于PEM燃料电池各种变载工况电压响应的预测,也可为各种控制模块模型设计提供参考。
An equivalent circuit model of a proton exchange membrane（PEM）fuel cell is used to study the dynamic voltage responses during load changes.The electrical energy generated inside the PEM fuel cell is set equivalent to a voltage source.The active losses,the ohmic losses and the concentration losses inside the PEM fuel cell are modeled as three resistances.The model for the voltage response during load changes is solved in Matlab.The simulation results agree well with the single cell test results.The model is also used to predict the voltage responses during large load changes with good predictions of the voltage undershoot and voltage reversal.The model can predict the dynamic response of a PEM fuel cell during load changes to design PEM fuel cell controls.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第10期1298-1303,共6页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金项目(21376138)
国家"九七三"重点基础研究项目(2012CB215505)
国家"八六三"高技术项目(2012AA1106012
2012AA053402)
