The causes of harmonic walking-through and the principle of its restraint by APFs are analyzed.
详细分析了谐波穿行现象产生的原因以及APF并列运行抑制谐波穿行的原理；
2
Like the AP Summary Page, the AP Status Page also gives you direct access to the Alarms list for all APFs.
正如ap汇总页，用户还可以在AP状态页中直接访问所有apf的告警列表。
3
In this paper, we propose and discuss two new control methods for three phase shunt APFs: the sinusoidal line current control method and the instantaneous reactive power compensation control method.