Experimental Study on Low-Pass Filtering Characteristic of Axial Magnetic Field of No-Insulation and Partial-Insulation HTS Coils Carrying a DC-Biased AC Current

Jiho Lee, Tae Sung Lee, Oh Jun Kwon, Haigun Lee, Tae Kuk Ko

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper deals with the low-pass filtering characteristic of the axial magnetic field of no-insulation and partial-insulation high temperature superconducting (HTS) coils carrying a dc-biased ac current. Recently, the no-insulation winding technique has been issued as a key technique to enhance the performance of HTS coils in terms of the overall current density, thermal stability, and mechanical integrity. In this paper, to verify the effect of time-varying external distortion on no-insulation HTS coils, an experimental analysis is carried on three HTS coils-insulation, no-insulation, and partial-insulation coils. To simulate the environment in which time-varying external distortion influences the HTS coils, a dc-biased ac current is carried by the HTS coils. The axial magnetic fields of no-insulation, partial insulation, and insulation HTS coils are experimentally tested and analyzed. When the coils carry a dc-biased ac current, the no-insulation and partial-insulation coils have a tendency to attenuate the high-frequency components and to act as a low-pass filter on the axial magnetic field; however, the insulation coil does not attenuate the high-frequency components of the axial magnetic field. The analysis of the experimental results can be useful data for the adoption of no-insulation and partial-insulation windings in superconducting applications.

Original languageEnglish
Article number6733316
JournalIEEE Transactions on Applied Superconductivity
Volume24
Issue number3
DOIs
Publication statusPublished - 2014 Jun 1

Fingerprint

insulation
Insulation
alternating current
coils
direct current
Magnetic fields
magnetic fields
Temperature
Superconducting coils
low pass filters
Low pass filters
integrity
tendencies
Thermodynamic stability
thermal stability
Current density

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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title = "Experimental Study on Low-Pass Filtering Characteristic of Axial Magnetic Field of No-Insulation and Partial-Insulation HTS Coils Carrying a DC-Biased AC Current",
abstract = "This paper deals with the low-pass filtering characteristic of the axial magnetic field of no-insulation and partial-insulation high temperature superconducting (HTS) coils carrying a dc-biased ac current. Recently, the no-insulation winding technique has been issued as a key technique to enhance the performance of HTS coils in terms of the overall current density, thermal stability, and mechanical integrity. In this paper, to verify the effect of time-varying external distortion on no-insulation HTS coils, an experimental analysis is carried on three HTS coils-insulation, no-insulation, and partial-insulation coils. To simulate the environment in which time-varying external distortion influences the HTS coils, a dc-biased ac current is carried by the HTS coils. The axial magnetic fields of no-insulation, partial insulation, and insulation HTS coils are experimentally tested and analyzed. When the coils carry a dc-biased ac current, the no-insulation and partial-insulation coils have a tendency to attenuate the high-frequency components and to act as a low-pass filter on the axial magnetic field; however, the insulation coil does not attenuate the high-frequency components of the axial magnetic field. The analysis of the experimental results can be useful data for the adoption of no-insulation and partial-insulation windings in superconducting applications.",
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Experimental Study on Low-Pass Filtering Characteristic of Axial Magnetic Field of No-Insulation and Partial-Insulation HTS Coils Carrying a DC-Biased AC Current. / Lee, Jiho; Lee, Tae Sung; Kwon, Oh Jun; Lee, Haigun; Ko, Tae Kuk.

In: IEEE Transactions on Applied Superconductivity, Vol. 24, No. 3, 6733316, 01.06.2014.

Research output: Contribution to journalArticle

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