A novel technique for implementation of Shunt Active Power Filter under balanced and unbalanced load conditions

In this paper Enhanced Phase Locked Loop (EPLL) based Shunt Active Power Filter is discussed. The performance of EPLL based system is tested under balanced and unbalanced load conditions. The EPLL is used to extract the magnitude and phase of required frequency component from input signal. The method is used in shunt active power filters to eliminate harmonics, improve power factor and correct the unbalanced conditions. The EPLL based system is simulated for both three phase balanced and unbalanced load conditions using MATLAB/Simulink. The simulation results are presented to demonstrate the effectiveness of proposed system.