Identification of harmonics of three-phase six-pulse rectifier with different kind of loads in MATLAB and fabrication model

Abstract

Power electronic converter is known as nonlinear device. Due to its conversion characteristic it drags and draws the source current from the power source. These characteristics make it to generate harmonics that will degrade the grid power quality (PQ). The effects of harmonics include malfunction of connected sensitive equipment such as protective relay and overheating of winding equipment like transformer and motor. Therefore, it is needed to identify the source of problems and deal with it. This paper analyses the harmonics behaviour of the three-phase six pulse (full wave) rectifier model that usually is used in industrial load applications with MATLAB software and test the constructed a fabricated circuit with PQ analyser. The results obtained from the fabricated model will be useful as the nonlinear load model for designing various types of filters to mitigate the current harmonic distortion.