Design and Implementation of T-Z Source Inverter System

Abstract

In this paper, a new family of single-stage high step-up boost voltage inverter based on transformer is proposed, called T-Z source inverters. By replacing two inductors in the classical Z-source inverter with two transformer, the proposed inverter produces a very high boost voltage gain when, the turn ratio of the transformer is larger than one. Compared to the trans-Z source inverter, the proposed T-Z source inverter uses a lower turn’s ratio, which reduces the transformer’s size and weight while producing the same output voltage gain. Single phase AC is converted into DC using uncontrolled rectifier. T-Z network is used to boost the voltage from 230 volt to 400 volt. DC is converted into three phase balanced AC using three phase inverter. The output of inverter is used to control the speed of induction motor. The extension of the proposed inverter topology to DC link type and embedded type topologies are presented