Abstract

The inverter studied and simulated in this paper is a 3-phase-quasi-z-source inverter. It is preferred due to certain qualities like its simple structure and because of having a continuous input current, common ground and shoot through state. Traditional inverters don’t have the shoot-through condition. If both the switches are operated at a time, short circuit occurs and circuit gets damaged. So we need to give dead time in traditional inverters. This results in more total harmonic distortion. In this paper we have studied a topology of Quasi-z-source inverter (qZSI) to analyse the effect of Shoot-Through Duty Ratio (D) variation on the output voltage. The results are obtained using MATLAB/SIMULINK, suitable plots and waveforms are drawn using the said results to investigate the change in output voltage with the change in shoot-through duty ratio. The advancement in quasi Z-source topology will be continuously improving the performance of electronic equipments in various applications because of its buck boost ability with least components and less cost. The fields on which it has maximum influence include aerospace, home appliances and power generation (solar, wind, etc).