Comparative analysis of two Control Schemes for APF with Passive Filter

Non-linear loads have an inherent property of drawing reactive power along with harmonic current from AC supply which causes various significant problems in the system. Thus, it is very crucial to mitigate these issues. One of the important and commonly used methods is using filters. In this paper, designing of a shunt connected active filter particularly for a three-phase balanced load with two different control strategies is presented. The results of both the control techniques used for designing an active filter are compared. Afterwards, designing procedure of a passive filter is also discussed. The combined performance of shunt connected active filter along with passive filter is analyzed in detail. The model is developed in MATLAB/ Simulink and all the results obtained are formally presented for validating the performance of both filters governing IEEE Std. 519-2014.