NDLI: Carrier-based PWM for Z-Source Inverters

Content Provider	IEEE Xplore Digital Library
Author	Arias M, A.A. Hofmann, W.
Copyright Year	2012
Description	Author affiliation: Department of Electrical Machines and Drives, Dresden University of Technology, 01062, Germany (Arias M, A.A.; Hofmann, W.)
Abstract	Z-Source Inverters have the ability to boost the dc link voltage, thus increasing the output ac voltage beyond the values reached by conventional inverters. The enhanced ratio from ac output voltage to dc link voltage is possible due to an impedance network connected between the dc power supply and the main converter. In order to boost the voltage, shoot-through states are needed. Shoot-through is produced by the inverter legs, thus shoot-through states have to be embedded into the modulation. Moreover, root-mean-square values of current and voltage in the Z-source depends on the modulation technique. Therefore, the inverter efficiency also depends on the modulation. This paper presents one way to embed shoot-through states in a standard carrier-based PWM. This novel technique is easy to implement, assures the best dc link utilisation, avoids extra switching for the shoot-through states, and equates the conduction losses obtained by other z-source modulators.
Starting Page	5274
Ending Page	5279
File Size	2113942
Page Count	6
File Format	PDF
ISBN	9781467324199
ISSN	1553572X
e-ISBN	9781467324212
e-ISBN	9781467324205
DOI	10.1109/IECON.2012.6388965
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-25
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Logic gates Impedance Inverters Digital TV Pulse width modulation Switches
Content Type	Text
Resource Type	Article

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