煤矿主通风机同步电动机励磁装置提高功率因数及稳定性的探讨

Discuss on the Method of Change in Reactive Power Load of Main Fan to Improve Power Factor

针对煤矿感性负荷大,大功率主通风机运行状态变化对功率因数的影响,根据拖动主通风机运行的同步电动机的特点,对其可控励磁装置进行了改进,使同步电动机的励磁电流随着负荷的大小而变化,恰当地补偿无功功率,提高了功率因数及稳定性。

In the system of electric power of coal mine, the emotional load is big, the high-power running main fan of changes impact relatively on power synchronous motor to drive the main fan to to make the changes of excitation current factor, makes the power factor unsteadiness, by the characteristics of run, improves the controllable excitation device of the synchronous motor for the synchronous motor with the load, and to properly compensate reactive power, improves the power factors and stability.