Abstract: The stator inter-turn short circuit fault of asynchronous motor is one of the typical stator faults. To ensure the safe operation of the motor, it needs to detect the fault in time and take measures immediately. Mechanism modeling of asynchronous motor with stator inter-turn short circuit fault is built in the two-phase synchronous rotating coordinate system, which is transformed into the form of state equation. Based on the asynchronous motor of CRH2, simulation research is carried. It detects the fault by multiple model matching with inter-turn short circuit coefficient. The simulation results verify the accuracy and effectiveness of the model, and the fault of asynchronous motor is detected by multiple model matching.

Key words: Asynchronous motor, inter-turn short circuit, fault model, multiple model matching, fault detection

摘要： 为定子绕组匝间短路故障是典型的异步电机定子故障，及时地检测出故障并采取措施，才能保证电机的安全运行。在两相同步旋转坐标系下对匝间短路故障时的异步电机进行机理建模，并转化为状态方程的形式，基于CRH2型异步电机进行仿真研究，利用短路匝故障系数通过多模型匹配的方法进行故障检测。仿真结果验证了模型的准确性与有效性，并通过多模型匹配检测出异步电机的故障情况。

关键词: 异步电机, 匝间短路, 故障建模, 多模型匹配, 故障检测