基于Modelica的燃料电池整车能量管理策略仿真研究

Simulation research on energy management strategy of fuel cells vehicle based on Modelica

“燃料电池—动力电池”混合动力汽车具有续驶里程长、能量利用率高、排放污染小等优点,是未来理想的新能源汽车。实现燃料电池和动力电池合理、高效的功率分配是提高燃料电池整车动力性和燃料经济性的关键所在。文章以混合动力系统为基础,针对燃料电池汽车动力系统制定“燃料电池-动力电池”功率分配策略,应用Modelica语言搭建整车模型,研究了能量管理策略对燃料电池汽车燃油经济性的影响。此外,文章还将仿真结果与试验结果进行了对比,验证了模型的可行性与正确性。

The“fuel cell-power battery”hybrid electric vehicle has the advantages of long driving range,high energy utilization rate,and low emission pollution which is an ideal new energy vehicle in the future.To achieve reasonable and efficient power distribution between fuel cell and power cell is the key to improve power performance and fuel economy of fuel cell vehicle.A novel model is proposed in this paper by using Modelica language to build a vehicle model based on the operation mode of the hybrid power system.By formulating the fuel cell/power battery power distribution strategy,a study of the effects of energy management strategies on the fuel economy of fuel cell vehicle power systems is presented.In addition,the simulation results are compared with the test results to verify the feasibility and correctness of the model.