Operation of an Active Power Filter with Line Voltage SVM under non-ideal Conditions

A shunt active power filter based on line voltage space vector modulation is presented and analyzed. In three-phase three-wire system, by employing line voltage vectors instead of phase voltage vectors which are inaccessible with non-ideal mains voltages, this control scheme extends the application of space vector modulation into non-ideal conditions, and operates under both ideal conditions and non-ideal conditions. Experimental results are presented to demonstrate the validity of the approach to compensate reactive power and harmonics.