三相异步电动机软启动关键问题探讨

Study on the Key Technology of Asynchronous Motor Soft Starting

介绍了电动机软启动的原理及特性,分析了轻载时系统震荡的原因,并给出了抑制系统震荡的方法,讨论了主电路元件的选取原则以及阻容吸收电路元件参数的选择方法,分析了合理设置启动时间的必要性。

In this paper, the operational principle and characteristic of asynchronous motor soft starting are elaborated, then, the reason of system oscillation is analyzed and the method to restrain oscillation is provided. Moreover, the selected principle of main circuit parameters is discussed. Simulation result shows the necessity of reasonable soft stating time.