三相鼠笼式异步电动机的启动控制

在船舶和海洋石油平台上 ,电网的规模都不是很大 ,因此较陆地而言 ,电网抵抗非正常情况的能力相对较弱。三相鼠笼式异步电动启动时产生很大的启动电流 ,对电网的影响比较大 ,因此如何减小电动机的启动电流是一个非常重要的问题。文章对降低电动机启动电流的重要性、可行性进行了阐述 ,对几种常用启动方法进行了简单的介绍 ,并根据船舶及海洋石油平台的特点对常用的几种启动器进行了比较 。

The turbulence-bear ability of the power system on ship or offshore oil platform is quite weak for its relative smaller size against that on onshore.It is very important to study the ways of how to decrease the starting current for three phases,squirrel-cage,asynchronous induction motors that furnished on offshore platforms,because the starting current of that is strongly influences the stable of the smaller size power system.This article analyzes the different methods of decreasing the staring current and gives a conclusion that the soft starter will be the lead type in future.