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

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 publicationIEEE Conference on Power Electronics and Renewable Energy, CPERE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages105-111
Number of pages7
ISBN (Electronic)9781728109107
DOIs
Publication statusPublished - Oct 2019
Event2019 IEEE Conference on Power Electronics and Renewable Energy, CPERE 2019 - Aswan City, Egypt
Duration: 23 Oct 201925 Oct 2019

Publication series

NameIEEE Conference on Power Electronics and Renewable Energy, CPERE 2019

Conference

Conference2019 IEEE Conference on Power Electronics and Renewable Energy, CPERE 2019
CountryEgypt
CityAswan City
Period23/10/1925/10/19

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Keywords

  • carrier-based PWM
  • dual output inverters
  • Nine-switch Inverter
  • quasi-z source
  • 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

Cite this

Dabour, S. M., Abdel-Khalik, A. S., Ahmed, S., & Massoud, A. (2019). Carrier-Based PWM Strategy for Quasi-Z Source Nine-Switch Inverters. In IEEE Conference on Power Electronics and Renewable Energy, CPERE 2019 (pp. 105-111). [8980225] (IEEE Conference on Power Electronics and Renewable Energy, CPERE 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CPERE45374.2019.8980225