摘要
利用等效电路,分析了三相异步电动机在不对称电压下的性能和对电机的危害.在不对称电压下运行时,电动机中将产生负序电流,负序电流将产生负序转矩,从而使电机损耗增加、效率降低、有效转矩减少,同时有可能引起电机的振动.
By applying equivalent cirouits,this paper has analyzed throe -phase asynchronous motor property and the harm to generator under asymmetrical voltage. Under asymmetrical voltage, will produce the current of negative phase - sequence will be produced in motor. The current of negative phase - sequence the torque of negative phase - sequence to make generator wastage increase, loss of efficiency, effective torque decrease, and make the motor vibrate.
出处
《湖北民族学院学报（自然科学版）》
CAS
2006年第1期42-45,共4页
Journal of Hubei Minzu University(Natural Science Edition)
关键词
三相异步电动机
不对称电压
负序电流
three - phase asynchronous motor
asymmetrical voltage
the current of backward phase - sequence
