A NOVEL METHOD OF SYNCHRONOUS REFERENCE FRAME THEORY FOR REAL TIME CONTROL OF THREE-PHASE SHUNT ACTIVE POWER FILTER (SAPF)

Abstract

In recent years various harmonic disturbances occur in power lines, mainly due to the nonlinear loads such as electrical machines, static power converters, and electric arc furnaces. Due to wide application of non-linear loads and electronic equipment’s in distribution system, the problem of power quality has become serious. Thisequipment can cause high disturbances in the power supply system. Effect of harmonic current and voltages in the power system affects the instruments connected to same power system. Shunt Active Power Filter (SAPF) is the popular and efficient solution to reduce these harmonics.SAPF can overcome voltage sag, eliminate harmonics and improves power factor. SAPF
reduces total harmonic distortion (THD) to acceptable level. Reference current generation is the heart of APF.In this paper we concentrate on design of Shunt Active Power Filter (SAPF) by using STF method to mitigate the harmonics. Here we use MATLAB/Simulink to obtain the result.