Using the unit generator Field-circuit Coupled Time-Stepping Finite Element Model, the open-circuit of generator terminal ends as well as the stator three-phase sudden short circuit process are simulated. The no-load voltage curves, and the short-circuit current dynamic curves of stator windings and field winding are gotten. 利用该单元电机场路耦合时步有限元模型,对发电机机端开路、三相突然短路过程进行了仿真计算,得到了发电机空载电压曲线以及定转子绕组的短路电流动态响应曲线。