Quasi-Z-Source Inverter using Sliding Mode Controller with Impedance Network

Abstract

Quasi inverter is designed in this paper to enhanced gain operation using sliding mode controller (SMC) with Z-source inverter (ZSI). It has boost voltage conversion at low ratio in duty cycle and output voltage quality is improved by high modulation index. Direct current (DC) is converted to alternating current (AC) with higher frequency pulse width modulation (PWM) signals. To reduce the inrush current in starting period it draws a low voltage at capacitors. This proposed inverter consists of common ground to source as well as bridge rectifier. Moreover, the ripple current is almost negligible in this ZSI. This paper proposes the ZSI with impedance of two switches network and the theoretical analysis done also it is confirmed in MATLAB/Simulink.