摘要：本文介绍了在有限的电网容量的条件下，西门子GL150变频软起动系统拖动两台大型同步电机并成功实现并网的案例，介绍了典型的变频起动同步电机系统的组成和工作原理，同时在大型空分装置中西门子GL150变频器软起动系统成功地解决了大功率同步电机的起动问题。

关键词：空分设备；变频器；软起动系统；同步电机

Abstract: This paper introduces that one case about GL150 converter soft starter system for 2 synchronous motors in the limited power grid. It also shows the typical synchronous motor soft starter system. At the same time, GL150 converter soft starter system successfully solves the starting of the high power synchronous m