Abstract : based on the analysis of the physical structure , operati ng principle and dynamic characteristics of the power unit of an excitation cont rol system , a model of this power unit is firstly established with bond graph app roach . the operation of this unit in both normal and abnormal conditions is simul ated on the platform of matlab with simulink . this simulation results have compar ed with the real operation behaviors 文摘:在对同步发电机自并励系统功率单元的物理结构、工作原理及动态特性进行分析的基础上，建立了励磁功率单元分布式物理图网模型，并在matlab的simulink平台上对励磁功率单元正常和几种故障情况下的工作进行了仿真研究，并与实际工作情况进行了比较
