NDLI: Reduced switch-count structure for symmetric multilevel inverters with a novel switched-DC-source submodule

Content Provider	IET Digital Library
Author	Avanaki, Hossein Nasiri Barzegarkhoo, Reza Zamiri, Elyas Yang, Yongheng Blaabjerg, Frede
Abstract	The aim of this study is to present a new cost effective topology for Symmetric multilevel inverters (SMLIs) configurations, which can generate a great number of output voltage levels with a least of switching devices. The proposed structure contains a novel switched-dc-source (SDCS) sub-module that can produce three positive output voltage levels with a contribution of four equal dc voltage sources, two unidirectional, and one bi-directional power switches. Accordingly, to create a uniform staircase output voltage with multiple levels, the proposed SDCS sub-module is integrated into a new design. Therefore, a new family of reduced switch-count (RSC)-SMLIs is derived, which is capable of generating at least 13- and 15-level output voltages using only ten power switches and nine gate drivers. Furthermore, when employing several of the proposed SDCS sub-modules in series, a new generalised RSC-SMLI topology is obtained. Comparisons with prior-art SMLIs structures are done, which also highlights the beneficial potential of the proposed topology. To demonstrate the superior performance of the proposed topology, several simulation and experimental results have been provided.
Starting Page	311
Ending Page	321
Page Count	11
ISSN	17554535
Volume Number	12
e-ISSN	17554543
Issue Number	Issue 2, Feb (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/12/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5089
Journal	IET Power Electronics
Publisher Date	2018-11-12
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bi-directional Power Switches Driver Circuit Invertors Power Electronics Power Supply Reduced Switch-count-SMLI SDCS Submodule SMLI Structure Supervisory Circuit Switched-dc-source Submodule Switching Converter Switching Device Symmetric Multilevel Inverter
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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