基于Simulink的燃料电池汽车混合动力电驱动系统仿真∗

摘要

The paper first was analyzed the configuration of the fuel cell vehicle ( FCV) hybrid electric drive system and built the dynamic mathematical model of electric drive systemincluding four modulars:fuel cell system, power battery, electric motor and DC/DC converter. The least squares method was used to estimate the model, and the estimation results under typical working conditions were showed the model accuracy. The power parameters of main components were designed and control strategies in different situations were presented according to the design purpose. Then a forward looking simulation model for electric drive system was designed based on the Simulink software platform. Simulation results confirm that the simulation model is powerful, economical and stable, which can lay a foundation for the further research of the whole FCV.%首先分析了燃料电池汽车混合动力电驱动系统基本结构并给出了等效电路，建立了电驱动系统的动态数学模型，主要包括：燃料电池系统、动力蓄电池、电动机和DC/DC转换器四个模块。采用最小二乘法对模型的参数进行了估计，典型工况下的估计结果显示模型的准确性。其次根据设计目标要求，设计了主要部件的功率参数，并提出了适合不同工作模式的车辆控制策略。然后基于Simulink软件平台，建立了前向式仿真模型。最后进行仿真试验，其结果分析表明，建立的电驱动系统模型有较好的动力性、经济性和平顺性，为燃料电池汽车整车研究提供了仿真平台。