A comparative study of failure-tolerant three-phase RTRUs for more electric aircrafts

Akshay Singh, Ayan Mallik, Alireza Khaligh

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

2 Scopus citations

Abstract

The increased adoption of more electric aircrafts has been spurred by the development of onboard converters with high-efficiency and high gravimetric power density. Taking the example of a modular Regulated Transformer Rectifier Unit (RTRU) using GaN switches, this paper provides a comprehensive comparison of two possible design pathways for efficient conversion with higher power density - (i) high-frequency cascaded two-stage AC-DC conversion, and (ii) single-stage AC-DC conversion at a relatively lower frequency. The detailed system modeling and design methodology for the two converter topologies are laid out. As one of the key contributions of this work, a direct comparison of the two converter concepts based on achievable volumetric and gravimetric power densities and efficiencies has been presented. Using the developed model framework, an extensive analysis is done to gain greater insight into the effect of key design parameters on efficiency and power density. As a proof-of-concept, experimental results are presented to validate the theoretical predictions.

Original languageEnglish (US)
Title of host publication34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1121-1127
Number of pages7
ISBN (Electronic)9781538683309
DOIs
StatePublished - May 24 2019
Externally publishedYes
Event34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
Duration: Mar 17 2019Mar 21 2019

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2019-March

Conference

Conference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
CountryUnited States
CityAnaheim
Period3/17/193/21/19

Keywords

  • AC-DC converter
  • More-electric aircraft (MEA)
  • Power density
  • Regulated transformer rectifier unit (RTRU)
  • Single-stage

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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