燃料电池轿车动力系统建模与仿真研究

Study on Modeling and Simulation of Fuel Cell Vehicle Powertrain

建立了包括燃料电池发动机、电机及其控制器、动力蓄电池组在内的燃料电池汽车动力系统的动态数学模型。采用最小二乘参数辨识的方法对模型中的未知参数进行了估计。仿真和实验结果对比证明,所建立的动态数学模型可以在一定程度上反映动力系统的特性,能够用于后续控制算法的设计和开发。

Constructed here is mathematic model of the fuel cell vehicle powertrain which is composed of fuel cell engine, DC motor and its controller and power battery. To estimate the unknown parameters of the mathematic model, the least square parameters estimation method was employed. At last of paper, the results of simulation and field test are illustrated. The results show that model constructed can represent characteristics of the main components of the powertrain approximatively, and it can be applied in subsequent design of control strategy for the fuel cell vehicle powertrain.