Implementation of Shunt Active Power Filter for Dynamically Distorted Load Conditions Using Goertzel Algorithm

In this paper the shunt active power filter (SAPF) under varying harmonic conditions is considered. The control technique used for reference current generation consists of Goertzel algorithm. The Goertzel Algorithm calculates the fundamental component of load current under non sinusoidal conditions with high speed and accuracy of response. The variation in harmonics is realized by changing the firing angle of Thyristor Controlled Reactor (TCR). The SAPF can be used for both single phase and 3 phase loads and can directly be connected to utility. The shunt active power filter controlled by Goertzel Algorithm is realized using MATLAB/Simulink. The simulation results meet the IEEE 519- 1992 recommended harmonic standard limits with minimum computations.