A new topology for quasi-Z-source inverter

Document Type: Research Paper


1 1Electrical Engineering Department, Shabestar Branch, Islamic Azad University, Shabestar, Iran.

2 Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran.


In this paper, a new circuit is proposed for step-up Z-source inverter based on QZSI (quasi-Z-source inverter). The proposed topology inherits all advantages of the conventional topology. The proposed topology in comparison with conventional topology reduces the ST (Shoot-through) duty cycle by over 25% at the same voltage boost factor. Theoretical analysis of the proposed qZSI in the ST and non-ST operating modes is described. Then in order to show the performance of the proposed ZSI, the simulation results on PSCAD software are used.