TY - GEN
T1 - A comparative study of failure-tolerant three-phase RTRUs for more electric aircrafts
AU - Singh, Akshay
AU - Mallik, Ayan
AU - Khaligh, Alireza
N1 - Funding Information:
ACKNOWLEDGMENT This work is sponsored by the Boeing Company, which is gratefully acknowledged.
Publisher Copyright:
© 2019 IEEE.
PY - 2019/5/24
Y1 - 2019/5/24
N2 - 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.
AB - 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.
KW - AC-DC converter
KW - More-electric aircraft (MEA)
KW - Power density
KW - Regulated transformer rectifier unit (RTRU)
KW - Single-stage
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U2 - 10.1109/APEC.2019.8722048
DO - 10.1109/APEC.2019.8722048
M3 - Conference contribution
AN - SCOPUS:85067102971
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1121
EP - 1127
BT - 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Y2 - 17 March 2019 through 21 March 2019
ER -