A study on the quench initiation and propagation characteristics in GdBCO racetrack pancake coil for large-scale rotating machines

D. G. Yang; J. B. Song; K. L. Kim; O. J. Kwon; W. S. Lee; T. K. Ko; H. G. Lee

doi:10.9714/psac.2011.13.3.024

A study on the quench initiation and propagation characteristics in GdBCO racetrack pancake coil for large-scale rotating machines

D. G. Yang, J. B. Song, K. L. Kim, O. J. Kwon, W. S. Lee, T. K. Ko, H. G. Lee

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The stability issue of high temperature superconducting (HTS) racetrack coils is one of the most important factors for the development of large-scale rotating machines, such as ship propulsion motors and power generators. However, The stability and normal zone propagation characteristics of HTS racetrack pancake (RP) coils are not sufficient yet. In this study, quench tests for a GdBCO racetrack pancake coil were carried out under the condition of LN₂ at 77 K. Minimum quench energy and two-dimensional normal zone propagation velocities of the coil are also discussed. Normal zone propagation velocity in the coil's curved section is faster than in its straight section due to stress effects. The test results show that the protection of the straight section is of greater importance than that of the curved section when GdBCO racetrack pancake coils are applied to large-scale rotating machines.

Original language	English
Pages (from-to)	24-30
Number of pages	7
Journal	Journal of the Korea Institute of Applied Superconductivity and Cryogenics
Volume	13
Issue number	3
DOIs	https://doi.org/10.9714/psac.2011.13.3.024
Publication status	Published - 2011 Sept

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.9714/psac.2011.13.3.024

Cite this

@article{67977b66e415402095a7ee63c583c2c1,

title = "A study on the quench initiation and propagation characteristics in GdBCO racetrack pancake coil for large-scale rotating machines",

abstract = "The stability issue of high temperature superconducting (HTS) racetrack coils is one of the most important factors for the development of large-scale rotating machines, such as ship propulsion motors and power generators. However, The stability and normal zone propagation characteristics of HTS racetrack pancake (RP) coils are not sufficient yet. In this study, quench tests for a GdBCO racetrack pancake coil were carried out under the condition of LN2 at 77 K. Minimum quench energy and two-dimensional normal zone propagation velocities of the coil are also discussed. Normal zone propagation velocity in the coil's curved section is faster than in its straight section due to stress effects. The test results show that the protection of the straight section is of greater importance than that of the curved section when GdBCO racetrack pancake coils are applied to large-scale rotating machines.",

author = "Yang, {D. G.} and Song, {J. B.} and Kim, {K. L.} and Kwon, {O. J.} and Lee, {W. S.} and Ko, {T. K.} and Lee, {H. G.}",

year = "2011",

month = sep,

doi = "10.9714/psac.2011.13.3.024",

language = "English",

volume = "13",

pages = "24--30",

journal = "Journal of the Korea Institute of Applied Superconductivity and Cryogenics",

issn = "1229-3008",

publisher = "Korea Institute of Applied Superconductivity and Cryogenics",

number = "3",

}

TY - JOUR

T1 - A study on the quench initiation and propagation characteristics in GdBCO racetrack pancake coil for large-scale rotating machines

AU - Yang, D. G.

AU - Song, J. B.

AU - Kim, K. L.

AU - Kwon, O. J.

AU - Lee, W. S.

AU - Ko, T. K.

AU - Lee, H. G.

PY - 2011/9

Y1 - 2011/9

N2 - The stability issue of high temperature superconducting (HTS) racetrack coils is one of the most important factors for the development of large-scale rotating machines, such as ship propulsion motors and power generators. However, The stability and normal zone propagation characteristics of HTS racetrack pancake (RP) coils are not sufficient yet. In this study, quench tests for a GdBCO racetrack pancake coil were carried out under the condition of LN2 at 77 K. Minimum quench energy and two-dimensional normal zone propagation velocities of the coil are also discussed. Normal zone propagation velocity in the coil's curved section is faster than in its straight section due to stress effects. The test results show that the protection of the straight section is of greater importance than that of the curved section when GdBCO racetrack pancake coils are applied to large-scale rotating machines.

AB - The stability issue of high temperature superconducting (HTS) racetrack coils is one of the most important factors for the development of large-scale rotating machines, such as ship propulsion motors and power generators. However, The stability and normal zone propagation characteristics of HTS racetrack pancake (RP) coils are not sufficient yet. In this study, quench tests for a GdBCO racetrack pancake coil were carried out under the condition of LN2 at 77 K. Minimum quench energy and two-dimensional normal zone propagation velocities of the coil are also discussed. Normal zone propagation velocity in the coil's curved section is faster than in its straight section due to stress effects. The test results show that the protection of the straight section is of greater importance than that of the curved section when GdBCO racetrack pancake coils are applied to large-scale rotating machines.

UR - http://www.scopus.com/inward/record.url?scp=84255199345&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84255199345&partnerID=8YFLogxK

U2 - 10.9714/psac.2011.13.3.024

DO - 10.9714/psac.2011.13.3.024

M3 - Article

AN - SCOPUS:84255199345

SN - 1229-3008

VL - 13

SP - 24

EP - 30

JO - Journal of the Korea Institute of Applied Superconductivity and Cryogenics

JF - Journal of the Korea Institute of Applied Superconductivity and Cryogenics

IS - 3

ER -

A study on the quench initiation and propagation characteristics in GdBCO racetrack pancake coil for large-scale rotating machines

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this