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Design Analysis of SiC-MOSFET Based Bidirectional SSPC for Aircraft High Voltage DC Distribution Network

A. Khera, Fatma; Bozhko, Serhiy; Wheeler, Pat

Design Analysis of SiC-MOSFET Based Bidirectional SSPC for Aircraft High Voltage DC Distribution Network Thumbnail


Authors

FATMA KHERA Fatma.Khera1@nottingham.ac.uk
Application Engineer



Abstract

Research on electric power systems (EPSs) for the aviation industry has recently grown significantly due to the need to reduce global CO2 emissions from transportation. To fulfill the power requirements of a more electric aircraft (MEA), DC power distribution has emerged as a potential solution. However, the progress of DC distribution faces significant difficulties related to system protection. Solid-state power controllers (SSPCs) are being considered in these applications due to their ability to provide fast-tripping mechanisms for system protection. Although SSPCs have been successfully implemented in low voltage DC 28V aircraft networks, their application in high voltage systems (270 V, ±270 V, or higher) presents challenges, such as over-voltage and excessive power loss, particularly for high-power applications. This paper focuses on the development of SSPCs for a 270 V DC system with a current rating of 125 A / 250 A. The paper presents designs for over-voltage suppression and thermal management of the SSPCs. The study also includes a comparative analysis of using a different number of SiC MOSFET modules connected in series and parallel and their effect on the cooling requirements and circuit temperature to assess power losses, power density, weight, and cooling requirements for the SSPCs. A prototype of the proposed SSPC has been built for experimental validation. Results show effective over-voltage suppression to 480 V and quick interruption capabilities with trip currents of 250 A and 375A within time intervals of 160 μs and 300 μs , respectively, for line inductance of 105 μH . The circuit withstands energy up to 22.5 J for a breaking current of 375 A.

Citation

A. Khera, F., Bozhko, S., & Wheeler, P. (2023). Design Analysis of SiC-MOSFET Based Bidirectional SSPC for Aircraft High Voltage DC Distribution Network. IEEE Access, 11, 113900-13912. https://doi.org/10.1109/ACCESS.2023.3323599

Journal Article Type Article
Acceptance Date Oct 2, 2023
Publication Date Oct 10, 2023
Deposit Date Jun 17, 2024
Publicly Available Date Jun 19, 2024
Journal IEEE Access
Electronic ISSN 2169-3536
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 11
Pages 113900-13912
DOI https://doi.org/10.1109/ACCESS.2023.3323599
Public URL https://nottingham-repository.worktribe.com/output/25957322
Publisher URL https://ieeexplore.ieee.org/document/10274962

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