Investigation and Suppression of External Alternating Field of HTS Excitation Coil in Homopolar Inductor Machine

Yuanhang Pan; Jiangtao  Yang; Qing  Li; Shoudao Huang; Chuang  Gao; Jun Ma

Investigation and Suppression of External Alternating Field of HTS Excitation Coil in Homopolar Inductor Machine

Yuanhang Pan^*, Jiangtao Yang, Qing Li, Shoudao Huang, Chuang Gao, Jun Ma

^*Corresponding author for this work

School of Electrical, Electronic and Mechanical Engineering

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

In high temperature superconducting homopolar inductor machine (HTS-HIM), the stationary HTS excitation coil is directly exposed to complex external perpendicular alternating field (EPAF). In this situation, the AC loss including dynamic loss and magnetization loss will occur in the HTS coil carrying direct current, which is harmful to the operation of HTS-HIM. To avoid the thermal runaway quench of HTS coil caused by AC loss and ensure the safe and reliable operation of HTS-HIM, the EPAF acting on the HTS coil is investigated and suppressed in this article. Firstly, the characteristics of the EPAF of HTS coil in HTS-HIM are obtained through theoretical and finite element analysis. Then, based on the distribution of EPAF and the special structure of HTS-HIM, a combined suppression method using two sets of U-shaped armature windings and L-shaped flux diverter is proposed and analyzed. The results show that the shielding factors of fundamental and DC components can be reduced to 25 % and 31 %, respectively.

Original language	English
Number of pages	5
Journal	IEEE Transactions on Magnetics
Early online date	21 May 2024
Publication status	E-pub ahead of print - 21 May 2024

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@article{bf4fdf826973489eb0d6d1013edd2bb5,

title = "Investigation and Suppression of External Alternating Field of HTS Excitation Coil in Homopolar Inductor Machine",

abstract = "In high temperature superconducting homopolar inductor machine (HTS-HIM), the stationary HTS excitation coil is directly exposed to complex external perpendicular alternating field (EPAF). In this situation, the AC loss including dynamic loss and magnetization loss will occur in the HTS coil carrying direct current, which is harmful to the operation of HTS-HIM. To avoid the thermal runaway quench of HTS coil caused by AC loss and ensure the safe and reliable operation of HTS-HIM, the EPAF acting on the HTS coil is investigated and suppressed in this article. Firstly, the characteristics of the EPAF of HTS coil in HTS-HIM are obtained through theoretical and finite element analysis. Then, based on the distribution of EPAF and the special structure of HTS-HIM, a combined suppression method using two sets of U-shaped armature windings and L-shaped flux diverter is proposed and analyzed. The results show that the shielding factors of fundamental and DC components can be reduced to 25 % and 31 %, respectively.",

author = "Yuanhang Pan and Jiangtao Yang and Qing Li and Shoudao Huang and Chuang Gao and Jun Ma",

year = "2024",

month = may,

day = "21",

language = "English",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

}

TY - JOUR

T1 - Investigation and Suppression of External Alternating Field of HTS Excitation Coil in Homopolar Inductor Machine

AU - Pan, Yuanhang

AU - Yang, Jiangtao

AU - Li, Qing

AU - Huang, Shoudao

AU - Gao, Chuang

AU - Ma, Jun

PY - 2024/5/21

Y1 - 2024/5/21

N2 - In high temperature superconducting homopolar inductor machine (HTS-HIM), the stationary HTS excitation coil is directly exposed to complex external perpendicular alternating field (EPAF). In this situation, the AC loss including dynamic loss and magnetization loss will occur in the HTS coil carrying direct current, which is harmful to the operation of HTS-HIM. To avoid the thermal runaway quench of HTS coil caused by AC loss and ensure the safe and reliable operation of HTS-HIM, the EPAF acting on the HTS coil is investigated and suppressed in this article. Firstly, the characteristics of the EPAF of HTS coil in HTS-HIM are obtained through theoretical and finite element analysis. Then, based on the distribution of EPAF and the special structure of HTS-HIM, a combined suppression method using two sets of U-shaped armature windings and L-shaped flux diverter is proposed and analyzed. The results show that the shielding factors of fundamental and DC components can be reduced to 25 % and 31 %, respectively.

AB - In high temperature superconducting homopolar inductor machine (HTS-HIM), the stationary HTS excitation coil is directly exposed to complex external perpendicular alternating field (EPAF). In this situation, the AC loss including dynamic loss and magnetization loss will occur in the HTS coil carrying direct current, which is harmful to the operation of HTS-HIM. To avoid the thermal runaway quench of HTS coil caused by AC loss and ensure the safe and reliable operation of HTS-HIM, the EPAF acting on the HTS coil is investigated and suppressed in this article. Firstly, the characteristics of the EPAF of HTS coil in HTS-HIM are obtained through theoretical and finite element analysis. Then, based on the distribution of EPAF and the special structure of HTS-HIM, a combined suppression method using two sets of U-shaped armature windings and L-shaped flux diverter is proposed and analyzed. The results show that the shielding factors of fundamental and DC components can be reduced to 25 % and 31 %, respectively.

M3 - Article (Academic Journal)

SN - 0018-9464

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

ER -

Investigation and Suppression of External Alternating Field of HTS Excitation Coil in Homopolar Inductor Machine

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