New level doubling architecture of cascaded Multilevel inverter

Arfan Ghani, Ashraf Yahya, Syed M Usman Ali

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)
    138 Downloads (Pure)


    This study presents a new topology of single-phase cascaded multilevel inverter (CMLI). The proposed topology offers an optimised DC source utilisation, reduced switch count and curtailment of active switches in the conduction path for minimising power losses. It can produce almost twice the number of output voltage steps in comparison to the cascaded H-bridge, hence named level-doubling architecture, and can be operated as both symmetric and asymmetric CMLIs. Identical modules of proposed CMLI precludes requirement of a variety of semiconductors and provides ease for spare management. The modular design also facilitates mass production and enhances system reliability. Furthermore, the proposed topology can be easily extended to high-voltage applications. The proposed design is tested for its practicability by simulations in MATLAB/ Simulink and results are verified by experimental set up of a scaled prototype single-phase model.

    Original languageEnglish
    Pages (from-to)1891-1902
    Number of pages12
    JournalIET Power Electronics
    Issue number8
    Early online date26 Mar 2019
    Publication statusPublished - 10 Jul 2019

    Bibliographical note

    "This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology
    Copyright. The copy of record is available at the IET Digital Library”

    Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering


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