A Synchronous Reference Frame Theory-Space Vector Modulation (SRF – SPVM) Based Active Power Filter for Mitigation of Current Harmonics in Distribution System

Pavithra.T

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25-Sep-23

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A Synchronous Reference Frame Theory-Space Vector Modulation (SRF – SPVM) Based Active Power Filter for Mitigation of Current Harmonics in Distribution System

Author(s):

Pavithra.T , KalaignarKarunanidhi Institute of Technology

Keywords:

Harmonics, Synchronous Reference Frame (SRF) theory, SVPWM, THD

Abstract:

This paper presents a shunt active filter for non-linear loads and unbalanced non-linear loads designed to minimize the harmonics present in the three phase three wire system. Due to the large proliferation of power electronic control systems in our day to day life, the switching of these power electronic circuits induces harmonics in the source which causes undesirable effects on the electrical components. Shunt active filter is a harmonic mitigating device comprising of voltage source inverter fed through a DC capacitor. The control strategy is based on extraction of harmonics using synchronous reference frame theory. The extracted harmonics are used to generate PWM signals using the Space Vector Pulse Width Modulation (SVPWM) for the voltage source inverter (VSI) which has reduced losses. The proposed method has been modeled and simulated using Matlab / Simulink and the output shows that the Total Harmonic Distortion (THD) of the supply has been reduced at the Point of Common Coupling (PCC).