NDLI: Single DC source three-phase multilevel inverter using reduced number of switches

Content Provider	IET Digital Library
Author	Tsang, Kai Ming Chan, Wai Lok
Abstract	A novel pulse-width modulation-less three-phase multilevel DC–AC inverter using only one DC source is presented in this study. The proposed approach enables multilevel output to be realised by a few cascaded H-bridges and a three-leg inverter using minimum number of power switches. As an illustration, a 19-level three-phase inverter has been implemented based on cascading four H-bridges and a three-leg inverter. Switching strategy has been derived for the proposed inverter such that a three-phase power system with 19 output levels can be realised with proper capacitor voltage regulation and a single energy source. Only 22 power switches instead of 108 are required to achieve the objective. Experimental results are included to demonstrate the outstanding performance of the proposed inverter. Although only 50 Hz results are presented, the proposed inverter could be applied in aircraft systems by only changing the switching frequency.
Starting Page	775
Ending Page	783
Page Count	9
ISSN	17554535
Volume Number	7
e-ISSN	17554543
Issue Number	Issue 4, Apr (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/7/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2013.0319
Journal	IET Power Electronics
Publisher Date	2013-10-07
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Aircraft Aircraft System Bridge Circuit Capacitor Capacitor Voltage Regulation Cascaded H-bridges DC-AC Power Converter Multilevel Output Power Converter Power Supplies to Apparatus Power Switch Pulse-width Modulation-less Three-phase Multilevel DC-AC Inverter PWM Invertors PWM Power Converter Relay And Switches Single DC Source Three-phase Multilevel Inverter Single Energy Source Switched Mode Converter Switching Circuit Switching Converter Three-leg Inverter Three-phase Power System Voltage Control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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