Comparison of phase-leg circuits for cryogenic operation in the all-electric aircraft

El-Wakeel, A. and Feng, Z. and McNeill, N. and Alzola, R. P. and Zhang, M. and Yuan, W.; (2022) Comparison of phase-leg circuits for cryogenic operation in the all-electric aircraft. In: 11th International Conference on Power Electronics, Machines and Drives (PEMD 2022). IEEE, Piscataway, NJ, pp. 618-624. ISBN 9781839537189 (https://doi.org/10.1049/icp.2022.1126)

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Abstract

Commercial all-electric aircraft are projected to be flying as early as 2035, where hydrogen is selected to supply fuel and coolant. The cryogenic aircraft's powertrain includes the turbines, generators, power electronics and fan motors. As most of the powertrain is located at cryogenic temperature, it is preferable to co-locate the power electronics in the same region to reduce the engineering system's complexity. Silicon super-junction MOSFETs are known for their high efficiency, thus lower cooling requirements at cryogenic temperature. However, in phase-leg circuits, the behaviour of the MOSFET's intrinsic diode, and its output capacitance are challenging. These issues can be addressed by using the MOSFET with ancillary power devices to realise diode deactivation. This paper compares different permutations of intrinsic diode deactivation devices at room temperature and cryogenic temperature. The paper presents a demonstrator phase-leg built with different ancillary power devices. It is operated from a DC voltage of 270 V, and supplies a phase current of up to 10 A.

  • Item type:Book Section
    ID code:82255
    Dates:
    Date
    Event
    29 August 2022
    Published
    23 June 2022
    Published Online
    9 May 2022
    Accepted
    Notes:© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:07 Sep 2022 16:40
    Last modified:11 Apr 2024 00:19
    URI:https://strathprints.strath.ac.uk/id/eprint/82255
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