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 language | English |
|---|---|
| Pages (from-to) | 1756-1762 |
| Number of pages | 7 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 470 |
| Issue number | 20 |
| DOIs | |
| Publication status | Published - Nov 1 2010 |
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Keywords
- HTS motor
- J distribution
- Mechanical stress
- Racetrack coil
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Energy Engineering and Power Technology
- Electronic, Optical and Magnetic Materials
Cite this
A study on electromagnetic and mechanical characteristics of the field coil in HTS motor. / Kim, Seok Beom; Kadota, T.; Joo, J. H.; Sano, H.; Murase, S.; Lee, S. H.; Hong, J. P.; 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 journal › Article
}
TY - JOUR
T1 - A study on electromagnetic and mechanical characteristics of the field coil in HTS motor
AU - Kim, Seok Beom
AU - Kadota, T.
AU - Joo, J. H.
AU - Sano, H.
AU - Murase, S.
AU - Lee, S. H.
AU - Hong, J. P.
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 - J distribution
KW - Mechanical stress
KW - Racetrack coil
UR - http://www.scopus.com/inward/record.url?scp=77957927625&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.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 -