Power Quality Improvement Through Modulation Techniques

Abstract

This paper presents an innovative idea which has the ability to deal with the issue regarding power quality such as harmonics while integrating renewable energy sources and distributed generation (DG) systems to the electrical power network. The purpose of this paper is to highlight novel approaches for a finer and effective outcome. Here, distinct modulation techniques have been introduced to enhance power quality through minimizing the harmonics and to regulate an output voltage of power electronic-based transformer. The models are designed in MATLAB/Simulink. The different approaches such as sinusoidal pulse width modulation (SPWM), sigma-delta modulation (SDM), delta modulation (DM) and hysteresis band current control technique (HBCC) have been discussed and applied with results and compared with each other to analyze lower THD.