改进同步电动机可控硅励磁装置提高功率因数稳定性的探讨

Discussion for stability of power factor to SCR Excitation device to improve in Synchronous Motor

针对煤矿感性负荷大,大功率主扇运行状态变化对功率因数的影响,根据拖动主扇运行的同步电动机的特点,对其可控励磁装置进行了改进。通过增设一个无功补偿插件,实现自动调节同步电动机的励磁电流,使它随着负荷的大小而变化,恰当地补偿无功功率,基本保证了功率因数提高的稳定性。

In view of heavy inductive load for coal and main fan of high power running change on the impact of the power factor, according to the characteristics of synchronous motor to drag the fan running, improved its controllable excitation device, Through the addition of a plug - in unit of reactive power compensation and achieved automatic adjustment of the excitation current for synchronous motor, it with the changes in load change, appropriate compensation achieved reactive power, basically had guaranteed the stability of power factor for improvement.