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10.1109_access.2021.3057554.pdf (2.32 MB)

New Asymmetrical Modular Multilevel Inverter Topology With Reduced Number of Switches

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journal contribution
submitted on 2023-08-30, 06:22 and posted on 2023-09-24, 07:39 authored by Saifullah Kakar, Shahrin Bin Md. Ayob, Atif Iqbal, Norjulia Mohamad Nordin, M. Saad Bin Arif, Sheetal Gore

In this article, a new single-phase multilevel inverter is introduced with a reduced number of power switches and reduced voltage stress on power switches. The proposed topology consists of four input dc sources and nine semiconductor switches (eight unidirectional and one bidirectional switch). The topology can be used for asymmetrical voltage source configuration to generate seventeen voltage levels. The extended topology is constructed by a series connection of the topology circuit to produce higher voltage levels with less voltage stress on the switches without modifying the existing structure. Comparison is made with traditional and recently introduced topologies based on the number of power switches, dc sources, total blocking voltage of switches, and gate driver circuits, to prove the proposed topology's superiority. A simple nearest level modulation has been deployed as the switching scheme. Validation on the viability of the proposed topology has been carried out through simulation and hardware experimental setup.

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Published in: IEEE Access
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Open Access funding provided by the Qatar National Library.



  • English



Publication Year

  • 2021

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This Item is licensed under the Creative Commons Attribution 4.0 International License.

Institution affiliated with

  • Qatar University
  • College of Engineering - QU