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DOI QR Code

A New Family of Cascaded Transformer Six Switches Sub-Multilevel Inverter with Several Advantages

  • Banaei, M.R. ;
  • Salary, E.
  • Received : 2012.05.10
  • Accepted : 2013.03.24
  • Published : 2013.09.01

Abstract

This paper presents a novel topology for cascaded transformer sub-multilevel converter. Eachsub-multilevel converter consists of two DC voltage sources with six switches to achieve five-level voltage. The proposed topology results in reduction of DC voltage sources and switches number. Single phase low frequency transformers are used in proposed topology and voltage transformation and galvanic isolation between load and sources are given by transformers. This topology can operate as symmetric or asymmetric converter but in this paper we have focused on symmetric state. The operation and performance of the suggested multilevel converter has been verified by the simulation results of a single-phase nine-level multilevel converter using MATLAB/SIMULINK.

Keywords

Sub-Multilevel inverter;Six switches;Symmetric state

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