High voltage Improved Trans-Z-Source inverter

Abstract

This paper deals with high boost voltage inverters that improve upon conventional Z-Source inverters. The conventional Z-Source inverter has a impedance network for buck-boost function to interface the DC source and inverter bridge. This proposed Improved Trans-Z-Source inverter has a transformer to obtain high voltage. This proposed inverter has increased voltage boost gain, reduced voltage stress and high boost factor due to the use of transformer. We can able to obtain high voltage from this inverter by making the turns ratio of the transformer more than unity. This paper presents the operating principles, analysis and simulation results of Improved Trans-Z-Source inverter and compares with the conventional Z-Source inverter. Both the shoot-through states and the turns ratio can be regulated to control the boost voltage gain.