ANALYSIS OF SHUNT ACTIVE POWER FILTER BASED HARMONIC MITIGATION AND REACTIVE POWER COMPENSATION

Abstract

Traditionally when one imagine about power quality, images of classical waveforms comprising 3rd, 5th, 7th etc. harmonics come into picture .On this basis IEEE in team with industries and utilities  and academia began to attack this problem in “power quality ” from the 80s. However in last few years the term power quality has grown in meaning form a simple power system harmonics. Since the growth of the industries is inevitable with more complex and sensitive equipment’s involving semiconductor etc. the power quality engulfed a whole new dimension of errors that appear in power system. In such a situation Active Power Filters have emerged as the solution in which SAPF is employed for removal of load current harmonics and reactive power compensation .Active filters for power conditioning offer the following: Responsive power pay, Harmonic remuneration, consonant disengagement, symphonious damping, and consonant end, Negative arrangement current/voltage pay, Voltage direction. The phrasing dynamic channels are frequently observed in various fields separated from control handling. In this work both PI controller based and Hysteresis Band controller, three phases SAPF is used to compensate harmonics and the reactive power by a non-linear load to better the quality and is implemented on three phase wire system. The simulation of the results done through MATLAB program, and number of simulation results of the method are observed under steady conditions.