Potential Application of A Liquid Nitrogen Switch in HTS DC Electrical System of Distributed Propulsion Aircrafts

Hongxu Li; Bin Xiang; Dongyu Wang; Muhammad Junaid; Yingsan Geng; Zhiyuan Liu; Jianhua Wang; Xiaoze Pei

doi:10.1109/ASEMD49065.2020.9276047

Potential Application of A Liquid Nitrogen Switch in HTS DC Electrical System of Distributed Propulsion Aircrafts

Hongxu Li, Bin Xiang, Dongyu Wang, Muhammad Junaid, Yingsan Geng, Zhiyuan Liu, Jianhua Wang, Xiaoze Pei

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Abstract

A nearly all-superconducting power system is considered as a promising path to realize Turboelectric distributed propulsion (TeDP) Aircraft. The options of power switches are rather limited and only cryogenic power electronics are into the scope so far. A mechanical switch using LN2 as an arc extinguishing medium (LN2 switch) can be a promising alternative that has lower conduction loss. However, basic research on current interruption in LN2 is still lacking, especially the effect of magnetic fields. The objective of this paper is to understand the effect of the magnetic field on DC current interruption by LN2. Interruptions under different magnetic fields are tested. A two-stage arcing process is observed under the magnetic field. Stage 1 is similar to that in the air while stage 2 is distinguished as interactions between vaporized LN2 and arc. 600 V DC/1 kA is interrupted by LN2 under 62.5 mT successfully. The interruption current is 8 times higher than that of without magnetic field applied. The magnetic field strengthens arc cooling by enhancing arc motion in LN2. Adding no burden to refrigeration, an LN2 switch can be a promising application in HTS electrical system.

Original language	English
Title of host publication	2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020
Place of Publication	U. S. A.
Publisher	IEEE
ISBN (Electronic)	9781728152158
DOIs	https://doi.org/10.1109/ASEMD49065.2020.9276047
Publication status	Published - 16 Oct 2020
Event	2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020 - Virtual, Tianjin, China Duration: 16 Oct 2020 → 18 Oct 2020

Publication series

Name	2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020

Conference

Conference	2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020
Country/Territory	China
City	Virtual, Tianjin
Period	16/10/20 → 18/10/20

Keywords

HTS electrical system
LN2 Switch
Magnetic field
TeDP

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering
Mechanical Engineering
Electronic, Optical and Magnetic Materials

Access to Document

10.1109/ASEMD49065.2020.9276047

Cite this

Li, H., Xiang, B., Wang, D., Junaid, M., Geng, Y., Liu, Z., Wang, J., & Pei, X. (2020). Potential Application of A Liquid Nitrogen Switch in HTS DC Electrical System of Distributed Propulsion Aircrafts. In 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020 [9276047] (2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020). IEEE. https://doi.org/10.1109/ASEMD49065.2020.9276047

Potential Application of A Liquid Nitrogen Switch in HTS DC Electrical System of Distributed Propulsion Aircrafts. / Li, Hongxu; Xiang, Bin; Wang, Dongyu et al.
2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020. U. S. A.: IEEE, 2020. 9276047 (2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020).

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Li, H, Xiang, B, Wang, D, Junaid, M, Geng, Y, Liu, Z, Wang, J & Pei, X 2020, Potential Application of A Liquid Nitrogen Switch in HTS DC Electrical System of Distributed Propulsion Aircrafts. in 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020., 9276047, 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020, IEEE, U. S. A., 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020, Virtual, Tianjin, China, 16/10/20. https://doi.org/10.1109/ASEMD49065.2020.9276047

Li H, Xiang B, Wang D, Junaid M, Geng Y, Liu Z et al. Potential Application of A Liquid Nitrogen Switch in HTS DC Electrical System of Distributed Propulsion Aircrafts. In 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020. U. S. A.: IEEE. 2020. 9276047. (2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020). doi: 10.1109/ASEMD49065.2020.9276047

Li, Hongxu ; Xiang, Bin ; Wang, Dongyu et al. / Potential Application of A Liquid Nitrogen Switch in HTS DC Electrical System of Distributed Propulsion Aircrafts. 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020. U. S. A. : IEEE, 2020. (2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020).

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abstract = "A nearly all-superconducting power system is considered as a promising path to realize Turboelectric distributed propulsion (TeDP) Aircraft. The options of power switches are rather limited and only cryogenic power electronics are into the scope so far. A mechanical switch using LN2 as an arc extinguishing medium (LN2 switch) can be a promising alternative that has lower conduction loss. However, basic research on current interruption in LN2 is still lacking, especially the effect of magnetic fields. The objective of this paper is to understand the effect of the magnetic field on DC current interruption by LN2. Interruptions under different magnetic fields are tested. A two-stage arcing process is observed under the magnetic field. Stage 1 is similar to that in the air while stage 2 is distinguished as interactions between vaporized LN2 and arc. 600 V DC/1 kA is interrupted by LN2 under 62.5 mT successfully. The interruption current is 8 times higher than that of without magnetic field applied. The magnetic field strengthens arc cooling by enhancing arc motion in LN2. Adding no burden to refrigeration, an LN2 switch can be a promising application in HTS electrical system. ",

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note = "Funding Information: This work is supported by National Natural Science Foundation of China (51877166, 51907153 , 51911530195) and the China Postdoctoral Science Foundation Funded Project (No.2019M653632). ; 2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2020 ; Conference date: 16-10-2020 Through 18-10-2020",

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AU - Liu, Zhiyuan

AU - Wang, Jianhua

AU - Pei, Xiaoze

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PY - 2020/10/16

Y1 - 2020/10/16

N2 - A nearly all-superconducting power system is considered as a promising path to realize Turboelectric distributed propulsion (TeDP) Aircraft. The options of power switches are rather limited and only cryogenic power electronics are into the scope so far. A mechanical switch using LN2 as an arc extinguishing medium (LN2 switch) can be a promising alternative that has lower conduction loss. However, basic research on current interruption in LN2 is still lacking, especially the effect of magnetic fields. The objective of this paper is to understand the effect of the magnetic field on DC current interruption by LN2. Interruptions under different magnetic fields are tested. A two-stage arcing process is observed under the magnetic field. Stage 1 is similar to that in the air while stage 2 is distinguished as interactions between vaporized LN2 and arc. 600 V DC/1 kA is interrupted by LN2 under 62.5 mT successfully. The interruption current is 8 times higher than that of without magnetic field applied. The magnetic field strengthens arc cooling by enhancing arc motion in LN2. Adding no burden to refrigeration, an LN2 switch can be a promising application in HTS electrical system.

AB - A nearly all-superconducting power system is considered as a promising path to realize Turboelectric distributed propulsion (TeDP) Aircraft. The options of power switches are rather limited and only cryogenic power electronics are into the scope so far. A mechanical switch using LN2 as an arc extinguishing medium (LN2 switch) can be a promising alternative that has lower conduction loss. However, basic research on current interruption in LN2 is still lacking, especially the effect of magnetic fields. The objective of this paper is to understand the effect of the magnetic field on DC current interruption by LN2. Interruptions under different magnetic fields are tested. A two-stage arcing process is observed under the magnetic field. Stage 1 is similar to that in the air while stage 2 is distinguished as interactions between vaporized LN2 and arc. 600 V DC/1 kA is interrupted by LN2 under 62.5 mT successfully. The interruption current is 8 times higher than that of without magnetic field applied. The magnetic field strengthens arc cooling by enhancing arc motion in LN2. Adding no burden to refrigeration, an LN2 switch can be a promising application in HTS electrical system.

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Potential Application of A Liquid Nitrogen Switch in HTS DC Electrical System of Distributed Propulsion Aircrafts

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