燃料电池发动机辅助系统功率的半经验模型

Semi-Empirical Model of Parasite System Power For Fuel Cell Engine

分析了燃料电池发动机辅助系统功率的变化特点及其规律,并在试验研究的基础上,通过反三角函数进行改造,建立了辅助系统功率特性的半经验模型.文中用3台燃料电池发动机在不同工况下的试验数据对模型进行了验证,结果表明,所建立的半经验模型具有较高的精度,能够较好地反映燃料电池发动机辅助系统的功率特性.该模型具有结构简单,模型参数较少等特点,通过较少的试验数据即能获得模型中的参数,便于在车辆动力学仿真研究中应用.

This paper presents an analysis of the power properties of a parasite system of a fuel cell engine Experimental studies show that the varying rule of parasite power is similar with the antitrigonometric function. A semi-empirical model of a parasite system power of a fuel cell engine is developed by modifying the antitrigonometric function, and is verified by different test data. The results show that the model can predict system performance respectively with such advantages as high precision, simple structure, less parameters and so on. The parameters can be easily obtained by test data. It can be applied to the study of vehicle dynamics simulation.