抽水蓄能机组变频启动技术介绍

Introduction of variable frequency starting in pumped storage units

抽水蓄能机组作为同步电动机模式,启动频繁、启动电流大,需要配备高稳定性的大功率软启动器,国内数十个抽水蓄能电站主要选用SFC变频器。本文选用晶闸管电流源型SFC变频器进行同步电动机变频启动技术理论分析,其中一些基础理论同样适用于包括IGBT-电压源型变频器在内的其它类型的变频器。

As mode of synchronous motor, because of frequent startup and large start current, pumped storage unit need allocatehigh stability and high power soft starter. Most pumped storage power stations in China select SFC frequency converters. Thispaper analyzes the variable frequency starting theory of thyristor current-source SFC variable frequency converter which is used insynchronous motor; some of these basic theories are suitable for IGBT voltage-source and other type variable frequency converters.