• Tilakarathna K R
• Dr.G.V.Jayaramaiah

This paper presents a single phase and three phase shunt active filter designed to minimize power quality problems in electrical system. The use of Power electronic circuit in a wide range of applications has resulted in distorted current in the power system. For example:-generation of current and voltage harmonics. Due to the use of non-linear loads such as UPS, SMPS, speed drives etc... Causes the generation of current harmonics in the electrical circuit which leads to the distortion of load waveform, voltage fluctuation, voltage dip, heating of equipment etc. They draw reactive power components of current from the AC mains, hence causing disturbance in supply current waveform. One of the effective method to reduce harmonic in power system is the use of Shunt Active Power Filter (SAPF). This Paper gives detail performance analysis of SAPF undercurrent control strategy instantaneous reactive power theory (p-q) method. In this method a reference current is generated for the filter which compensate harmonic current component in power system. A current controller known harmonic current controller is used provide corrective gating sequence of the IGBT inverter and thus helps to remove harmonics component.

shunt active filter, Instantaneous Reactive Power Theory, Hysteresis Current controller.

"Mitigation of Current Harmonics Using Single Phase and Three phase Shunt Active Filter with P-Q Technique", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 8, page no.1486-1491, August-2020, Available :http://www.jetir.org/papers/JETIR2008192.pdf

"Mitigation of Current Harmonics Using Single Phase and Three phase Shunt Active Filter with P-Q Technique", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 8, page no. pp1486-1491, August-2020, Available at : http://www.jetir.org/papers/JETIR2008192.pdf