Efficiency Comparisons of Two-level and Three-level GaN/SiC based Converters

Mohammad Najjar*, Morten Nymand, Alireza Kouchaki

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The efficiency and power density of power electronics converter can easily be improved through the utilization of wide bandgap (WBG) devices. Meanwhile, by growing the diversity of WBG devices, it becomes challenging to select an optimum topology with proper switching frequency to reach an efficient and compact design. Owing to the superior performance of enhancement mode gallium-nitride (GaN) transistors and Silicon Carbide (SiC) MOSFETs, this paper presents efficiency comparisons for GaN/SiC based two-level and three-level converters. Three widely industrial used voltage source converter (VSC) topologies are chosen in this study (1) two-level half-bridge converter, (2) three-level T-type converter, and (3) three-level active neutral-point-clamped (ANPC) converter. Three cases based on different modulation techniques are considered for the comparisons. To verify the results, a prototype of ANPC is built and measured efficiencies are compared with the calculated results.

Original languageEnglish
Title of host publication2021 IEEE 12th Energy Conversion Congress and Exposition - Asia (ECCE Asia)
PublisherIEEE
Publication date2021
Pages13-18
Article number9479380
ISBN (Electronic)9781728163444
DOIs
Publication statusPublished - 2021
Event12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021 - Virtual, Singapore, Singapore
Duration: 24. May 202127. May 2021

Conference

Conference12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021
Country/TerritorySingapore
CityVirtual, Singapore
Period24/05/202127/05/2021
SeriesProceedings of the Energy Conversion Congress and Exposition
ISSN2150-6078

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

Keywords

  • Analytical calculation
  • Efficiency
  • Loss calculation
  • Multilevel converters
  • Wide bandgap devices

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