NDLI: Comparative Evaluation of Pulsewidth Modulation Strategies for Z-Source Neutral-Point-Clamped Inverter

Content Provider	IEEE Xplore Digital Library
Author	Poh Chiang Loh Blaabjerg, F. Chow Pang Wong
Copyright Year	1986
Abstract	Z-source neutral-point-clamped (NPC) inverter has recently been proposed as an alternative three-level buck-boost power conversion solution with an improved output waveform quality. In principle, the designed Z-source inverter functions by selectively "shooting through" its power sources, coupled to the inverter using two unique Z-source impedance networks, to boost the inverter three-level output waveform. Proper modulation of the new inverter would therefore require careful integration of the selective shoot-through process to the basic switching concepts to achieve maximal voltage-boost, minimal harmonic distortion, lower semiconductor stress, and minimal number of device commutations per switching cycle. To date, the theoretical background on Z-source NPC modulation has not been fully established, and it is the theme of this paper to propose a number of enhanced voltage-boost pulsewidth modulation (PWM) strategies for controlling the Z-source NPC inverter. While developing the PWM techniques, attention has been devoted to carefully derive them from a common generic basis for improved portability, easier implementation, and most importantly, assisting readers in understanding all concepts that have been presented. The presented strategies are also comparatively evaluated to identify their individual advantages and disadvantages, which are subsequently summarized in a comprehensive reference table. Last, simulation and experimental results are included for validating the performances and practicalities of the presented modulation schemes
Sponsorship	IEEE Power Electronics Society
Starting Page	1005
Ending Page	1013
Page Count	9
File Size	1890832
File Format	PDF
ISSN	08858993
Volume Number	22
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse inverters Pulse width modulation inverters Pulse modulation Pulse width modulation Power conversion Impedance Power semiconductor switches Voltage Harmonic distortion Stress Z-source inverters Buck-boost inverters neutral-point-clamped (NPC) inverters pulsewidth modulation (PWM)
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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