中文摘要：

CRH5型动车组牵引部件具有非线性、多能域等特点，不易获取准确的系统级机理模型，而基于数据的建模方法又很难描述系统的拓扑结构和元件间的因果关系．利用键合图建模理论多能域、图形化的特点，建立与实际物理系统相吻合的牵引电动机和齿轮箱级联系统的键合图模型；研究牵引电动机常见故障的注入，在键合图中模拟电动机定子绕组短路故障，分析故障下机一电能域间的交互影响，展示键合图建模在故障传播分析和故障诊断方面的应用前景．仿真结果验证正常和故障工况下键合图模型的准确性．

英文摘要：

It is difficult to obtain accurate first-principle models for CRH 5 electric multiple units（EMU） traction devices as they usually have the characteristics of non-linearity and multi-domain coupling. Pure data-based modeling methods are also inadequate because they can＇t model the topology of system and the causality between components. Bond graph （BG） is suitable for modeling multi-domain systems; therefore, it was used to model the cascaded traction devices consisting of an induction machine and a gearbox. Fault injection in traction devices was also studied by simulating a motor stator winding short circuit fault using the developed BG model. The purpose was to analyze the interaction between electrical/mechanical energy domains in traction devices in the presence of faults, to display the prospect of application of BG modeling in the study of fault diagnosis and fault propagation. The simulation results could verify the validity of the developed model for CRH 5 EMU traction devices in both normal and faulty conditions.