Analysis and Design of the Quasi-Z-Source Inverter for Wide Range of Operation

Ahmed Abdelhakim, Pooya Davari, Frede Blaabjerg, Paolo Mattavelli

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

8 Citations (Scopus)
313 Downloads (Pure)

Abstract

Impedance source inverters are experiencing a solid evolution since the first release of the traditional Z-source inverter (ZSI) in 2003, and among the abundant structures, quasi-ZSI (qZSI) is commonly studied for many applications due to its simple structure and having a continuous input current. Despite such attractive performance of the qZSI in various applications, it suffers from an inferior performance during partial-load operation, resulting in a limited range of operation. Hence, this paper introduces a conceptual study of the qZSI partial-load operation, demonstrating two important aspects in order to maintain the highest possible performance within the desired operating range. Firstly, a design aspect concerning the proper sizing of the impedance network inductance using linear and non-linear chokes is introduced. Secondly, a control aspect is proposed based on utilizing higher effective switching frequency through switching among different modulation schemes. Finally, a 3 kVA qZSI prototype is utilized in order to experimentally validate the reported analysis and discussions.
Original languageEnglish
Title of host publicationProceedings of the 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL)
Number of pages6
PublisherIEEE Press
Publication dateJun 2018
Pages1-6
Article number8458486
ISBN (Print)9781538655412
ISBN (Electronic)978-1-5386-5541-2
DOIs
Publication statusPublished - Jun 2018
Event19th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2018 - Padova, Italy
Duration: 25 Jun 201828 Jun 2018

Conference

Conference19th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2018
CountryItaly
CityPadova
Period25/06/201828/06/2018
SeriesIEEE Workshop on Control and Modeling for Power Electronics (COMPEL)
ISSN1093-5142

Keywords

  • Continuous conduction mode (CCM)
  • discontinuous conduction mode (DCM)
  • impedance source inverter
  • partial-load
  • quasi-Z-source inverter (qZSI)
  • shoot-through
  • space vector modulation
  • Z-source inverter (ZSI)

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