A study on electromagnetic and mechanical characteristics of the field coil in HTS motor

S. B. Kim, T. Kadota, J. H. Joo, H. Sano, S. Murase, S. H. Lee, Jung-Pyo Hong, H. M. Kim, Y. K. Kwon, Y. S. Jo

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

High temperature superconducting (HTS) motors electromagnetically consist of a rotator wound with HTS wires and an armature with conventional copper wires like Litz wire. The HTS rotor windings, as field coils, consist of a straight part and an end-ring part. Because a major rotation torque is induced by an interaction between magnetic fields and current-carrying conductors in the straight part, most of mechanical stresses in the motor occur at the straight part. An end-ring is placed in the edge of the straight part and used to connect to each adjacent straight-part coils. The magnetic fields by coil currents concentrate on the end-ring part, therefore, it is expected that the critical current of the entire coil, straight and end-ring, can be determined by the magnitude of the field in the end-ring. This paper deals with the overall Jc degradation in the end-ring part by self-field generated from the coil. In addition to electromagnetic analyses, we have performed a numerical analysis in order to evaluate mechanical stresses in the straight part of field coil by armature reaction on steady-state operation. The analytical results will be presented in this paper.

Original languageEnglish
Pages (from-to)1756-1762
Number of pages7
JournalPhysica C: Superconductivity and its applications
Volume470
Issue number20
DOIs
StatePublished - 2010 Nov 1

Fingerprint

field coils
electromagnetism
rings
coils
Wire
Magnetic fields
Superconducting wire
armatures
Critical currents
wire
Temperature
Numerical analysis
Copper
Torque
Rotors
Degradation
magnetic fields
rotors
numerical analysis
torque

Keywords

  • HTS motor
  • Mechanical stress
  • Racetrack coil

Cite this

Kim, S. B. ; Kadota, T. ; Joo, J. H. ; Sano, H. ; Murase, S. ; Lee, S. H. ; Hong, Jung-Pyo ; Kim, H. M. ; Kwon, Y. K. ; Jo, Y. S. / A study on electromagnetic and mechanical characteristics of the field coil in HTS motor. In: Physica C: Superconductivity and its applications. 2010 ; Vol. 470, No. 20. pp. 1756-1762.
@article{58848386f43849a380e38ac1a57a593b,
title = "A study on electromagnetic and mechanical characteristics of the field coil in HTS motor",
abstract = "High temperature superconducting (HTS) motors electromagnetically consist of a rotator wound with HTS wires and an armature with conventional copper wires like Litz wire. The HTS rotor windings, as field coils, consist of a straight part and an end-ring part. Because a major rotation torque is induced by an interaction between magnetic fields and current-carrying conductors in the straight part, most of mechanical stresses in the motor occur at the straight part. An end-ring is placed in the edge of the straight part and used to connect to each adjacent straight-part coils. The magnetic fields by coil currents concentrate on the end-ring part, therefore, it is expected that the critical current of the entire coil, straight and end-ring, can be determined by the magnitude of the field in the end-ring. This paper deals with the overall Jc degradation in the end-ring part by self-field generated from the coil. In addition to electromagnetic analyses, we have performed a numerical analysis in order to evaluate mechanical stresses in the straight part of field coil by armature reaction on steady-state operation. The analytical results will be presented in this paper.",
keywords = "HTS motor, Mechanical stress, Racetrack coil",
author = "Kim, {S. B.} and T. Kadota and Joo, {J. H.} and H. Sano and S. Murase and Lee, {S. H.} and Jung-Pyo Hong and Kim, {H. M.} and Kwon, {Y. K.} and Jo, {Y. S.}",
year = "2010",
month = "11",
day = "1",
doi = "10.1016/j.physc.2010.05.201",
language = "English",
volume = "470",
pages = "1756--1762",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
number = "20",

}

Kim, SB, Kadota, T, Joo, JH, Sano, H, Murase, S, Lee, SH, Hong, J-P, Kim, HM, Kwon, YK & Jo, YS 2010, 'A study on electromagnetic and mechanical characteristics of the field coil in HTS motor', Physica C: Superconductivity and its applications, vol. 470, no. 20, pp. 1756-1762. https://doi.org/10.1016/j.physc.2010.05.201

A study on electromagnetic and mechanical characteristics of the field coil in HTS motor. / Kim, S. B.; Kadota, T.; Joo, J. H.; Sano, H.; Murase, S.; Lee, S. H.; Hong, Jung-Pyo; Kim, H. M.; Kwon, Y. K.; Jo, Y. S.

In: Physica C: Superconductivity and its applications, Vol. 470, No. 20, 01.11.2010, p. 1756-1762.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A study on electromagnetic and mechanical characteristics of the field coil in HTS motor

AU - Kim, S. B.

AU - Kadota, T.

AU - Joo, J. H.

AU - Sano, H.

AU - Murase, S.

AU - Lee, S. H.

AU - Hong, Jung-Pyo

AU - Kim, H. M.

AU - Kwon, Y. K.

AU - Jo, Y. S.

PY - 2010/11/1

Y1 - 2010/11/1

N2 - High temperature superconducting (HTS) motors electromagnetically consist of a rotator wound with HTS wires and an armature with conventional copper wires like Litz wire. The HTS rotor windings, as field coils, consist of a straight part and an end-ring part. Because a major rotation torque is induced by an interaction between magnetic fields and current-carrying conductors in the straight part, most of mechanical stresses in the motor occur at the straight part. An end-ring is placed in the edge of the straight part and used to connect to each adjacent straight-part coils. The magnetic fields by coil currents concentrate on the end-ring part, therefore, it is expected that the critical current of the entire coil, straight and end-ring, can be determined by the magnitude of the field in the end-ring. This paper deals with the overall Jc degradation in the end-ring part by self-field generated from the coil. In addition to electromagnetic analyses, we have performed a numerical analysis in order to evaluate mechanical stresses in the straight part of field coil by armature reaction on steady-state operation. The analytical results will be presented in this paper.

AB - High temperature superconducting (HTS) motors electromagnetically consist of a rotator wound with HTS wires and an armature with conventional copper wires like Litz wire. The HTS rotor windings, as field coils, consist of a straight part and an end-ring part. Because a major rotation torque is induced by an interaction between magnetic fields and current-carrying conductors in the straight part, most of mechanical stresses in the motor occur at the straight part. An end-ring is placed in the edge of the straight part and used to connect to each adjacent straight-part coils. The magnetic fields by coil currents concentrate on the end-ring part, therefore, it is expected that the critical current of the entire coil, straight and end-ring, can be determined by the magnitude of the field in the end-ring. This paper deals with the overall Jc degradation in the end-ring part by self-field generated from the coil. In addition to electromagnetic analyses, we have performed a numerical analysis in order to evaluate mechanical stresses in the straight part of field coil by armature reaction on steady-state operation. The analytical results will be presented in this paper.

KW - HTS motor

KW - Mechanical stress

KW - Racetrack coil

UR - http://www.scopus.com/inward/record.url?scp=77957927625&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2010.05.201

DO - 10.1016/j.physc.2010.05.201

M3 - Article

AN - SCOPUS:77957927625

VL - 470

SP - 1756

EP - 1762

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 20

ER -