Carrier-based PWM strategy for quasi-z source nine-switch inverters

Sherif M. Dabour, Ayman S. Abdel-Khalik, Shehab Ahmed, Ahmed Massoud

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

Nine-switch Inverters (NSIs) have been proposed to accommodate the independent control of dual AC motors or in six-phase drives. This topology reduces the number of active switches by 25%compared with conventional Voltage Source Inverter (VSI). However, it has a main conceptual shortcoming of voltage gain limitations. The voltage gains of both outputs are low, and their values depend on the phase angle between the two three-phase voltage output sets. This paper introduces a Quasi-Z Source NSI(QZS-NSI) topology to overcome voltage gains shortcomings of NSIs. Although a body of research for conventional three-phase QZS-VSI has been undertaken, corresponding discussions for all the impedance network based NSI are still scarce and complicated. This paper proposes a simple carrier-based PWM approach to modulate the QZS-NSI in both common-frequency and different-frequency modes of operations. Accordingly, four PWM schemes are introduced with simple, maximum and constant boost control methods. The operating principles and performance criteria of each scheme are introduced and compared. The feasibility of the proposed modulation schemes is confirmed by the simulation results which show good accordance with the theoretical analysis. Furthermore, the presented strategy can be extended to other types of impedance network-based NSIs.

Original languageEnglish
Title of host publication2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE)
PublisherIEEE
Pages105-111
Number of pages7
ISBN (Electronic)9781728109107
ISBN (Print)9781728109114
DOIs
Publication statusPublished - 6 Feb 2020
Event2019 IEEE Conference on Power Electronics and Renewable Energy, CPERE 2019 - Movenpick Resort, Aswan City, Egypt
Duration: 23 Oct 201925 Oct 2019

Conference

Conference2019 IEEE Conference on Power Electronics and Renewable Energy, CPERE 2019
Abbreviated titleCPERE 2019
Country/TerritoryEgypt
CityAswan City
Period23/10/1925/10/19

Keywords

  • nine-switch Inverter
  • carrier-based PWM
  • quasi-z source
  • dual output inverters
  • six-phase drives

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Control and Optimization

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