分析软起动器的工作原理，结合在离心铸铝机的应用，阐明软起动器这种新型节能技术应用在三相异步电动机上的优越性。
In the light of application to centrifugal casting machine, working principle of soft starter is analyzed and the advantage of this new energy-saving technique of soft starter is presented.
为了解决上述问题，本文研究了三相感应电动机软起动器。
A soft starter of three-phase induction will be discussed in this paper to solve the problems.
本文研究了三相感应电动机软起动器，主电路由三组反并联的晶闸管构成。通过控制晶闸管的触发角，可降低三相感应电动机定子电压，从而达到抑制起动电流冲击的目的。
The principle of the soft starter is reducing the voltage applied to the stator of the induction motor by control the triggering angle of the thyristors in order to limit the starting current surge.
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