电子式软启动下感应电机的启动过程

Electronic Soft Start-Up Process of Induction Motors

用混合变量改进方法建立感应电机模型,通过控制单元在主电路拓扑的变化下,采用双向晶闸管控制高压电机软启动。该过程利用Matlab/Simulink仿真模拟电机启动时定子电流和转矩变化情况,整个操作控制精确,效果明显,对实际应用有较大的参考价值。

This paper proposes an improved induction motor model using hybrid variable method.With the change of main circuit topology due to the control cell,the high voltage start-up process is controlled by the bidirectional thyristor.The current and torque of stator at the motor starting is simulated by Matlab/Simulink.The proposed method has great reference value in practice application for its precise control and evident effect.