NDLI: Comprehensive review of a recently proposed multilevel inverter

Content Provider	IET Digital Library
Author	Gupta, Krishna Kumar Jain, Shailendra
Abstract	As multilevel inverters are gaining increasing importance, newer topologies are being proposed to reduce part count for large number of levels in output voltage. A simplified five-level inverter has been recently reported in the literature to reduce component count. The topology comprises of floating input DC sources connected in opposite polarities through power switches. The structure requires lesser active switches as compared with conventional cascaded H-bridge topology with much reduced switching losses. Available literature present generalisation of the topology with symmetrical sources, but no investigations are made for equal load sharing and asymmetrical configurations. This study presents a comprehensive analysis of the aforementioned topology, referred to as cross-connected sources-based multilevel inverter (CCS-MLI). The topology is analysed for both symmetric and asymmetric source configurations. Also, a new algorithm for asymmetric source configuration suitable for CCS-MLI is proposed. A control scheme is also proposed for equal load sharing in five-level topology. Investigations are made for possibility of equal load sharing in higher level structures and fundamental frequency switching of switches bearing higher voltage stresses. Various concepts are verified with simulations and experimental studies.
Starting Page	467
Ending Page	479
Page Count	13
ISSN	17554535
Volume Number	7
e-ISSN	17554543
Issue Number	Issue 3, Mar (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/7/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2012.0438
Journal	IET Power Electronics
Publisher Date	2014-01-31
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Switches Asymmetric Source Configuration Cascaded H-bridge Topology CCS-MLI Cross-connected Sources-based Multilevel Inverter Equal Load Sharing Five-level Inverter Floating Input DC Source Fundamental Frequency Switching Invertors Power Electronics Power Supply Power Switch Reduced Switching Loss Relay And Switches Supervisory Circuit Switched Mode Converter Symmetrical Source Voltage Stress
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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