Design and Analysis of Switched Inductor Impedence Source Inverter

Abstract

The conventional voltage source inverter is restricted by its only step-down operation and the current source inverter is restricted by exclusively current step down mode. In order to get   extra boosting ability while keeping the number of active semiconductors unchanged the voltage type and current type impedance source inverters are initially proposed. These new type categorize of inverters are normally high robust and less sensitive to electromagnetic noises, but their boosting capabilities are unapparent compromised by high component stress and poorer spectral performances caused by exhausted modulation ratios. So their boosting gains are limited. To overcome these shortcomings z-source inverter by using switched inductor and switched capacitors are proposed. These extra boosting abilities and other advantages have been verified in simulation