电源切换对感应电机产生的影响

Effect of Fast Recloving on Induction Motor

电源快速切换不仅引起的冲击电流远大于电机设备常规起动电流,而且会造成瞬态电磁转矩值大范围波动,影响系统工作特性,降低设备使用寿命.以感应电动机为例,借助Ansoft软件分析电机系统电源和后备电源快速切换引起的冲击扰动问题,并主要阐述切换前后感应电动机的机械特性、各性能参数的变化、以及磁场的分布情况.

The transient response caused by the fast reclosing of the electrical sources of the motor system, can prevent electronic devices in the system from working normally and can disable the circuitry-protecting devices. During the fast reclosing operation, the current and torque developed in an induction motor can be several times larger then the staring current. By means of Ansoft, the changes of induction motor about mechanical properties and all capability parameters along with distributing of magnetic field are analyzed.