A three-phase four-wire distribution system, with a line voltage of 415 V, at 50 Hz, is feeding three single-phase loads (connected between phases and neutral) having a diode bridge converter drawing equivalent constant 25 A DC current. A four-leg VSI with DC bus capacitor is used as active power filter (APF).

1.The APF neutral current is

2.The kVA rating of the APF to provide harmonic current compensation at unity power factor is:

Answer rating: 100% (QA)

12 APF Neutral current Ineutral V2 X IDC where IDC is the De Current dram by each Single ph... View the full answer