A research on design method and theoretical analysis of electromagnetic suspension system considering magnetic interface between coils

Jae Young Jang, Young Jae Kim, Ki Sung Chang, Yoon Do Chung, Chang Young Lee, Tae Kuk Ko

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper deals with the design and operating characteristics analysis of electromagnetic suspension (EMS) system. The EMS system consists of a rail, a U-shaped iron core, a high temperature superconductor (HTS) coil, a couple of DC control coils. The HTS coil generates a high magnetic field in the U-shaped iron coil and the rail. As wall as, the U-shaped iron core can be attracted by the coupled high magnetic field. We calculated turns and operating current conditions of HTS coil considering the decay of critical current when perpendicular magnetic fields are applied to the HTS coil. In addition to the design of the HTS coil, a Linear Quadratic (LQ) control method used to design the DC control coils that control the gap distance between the rail and U-shaped iron core. That is, if the gap distance is varied due to the several external disturbances, the DC control coils generated a magnetic field and then keep the constant interval. Thus, the operation of DC control coils would affect the magnetic flux density at the air gap. In this study, we verified the effect of distributions of magnetic flux density using finite element method (FEM) and MATLAB Simulink simulations. Furthermore, we numerically calculated the appropriate control current of DC control coils and the perpendicular magnetic field density on the HTS coil under the external disturbance. Based on these results, the appropriately combined current conditions and control method of EMS system to realize the stable levitation force were achieved.

Original languageEnglish
Article number5643151
Pages (from-to)1523-1527
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Volume21
Issue number3 PART 2
DOIs
Publication statusPublished - 2011 Jun 1

Fingerprint

High temperature superconductors
Suspensions
coils
electromagnetism
high temperature superconductors
Magnetic fields
Iron
Rails
direct current
rails
Magnetic flux
iron
magnetic fields
magnetic flux
Critical currents
Electric current control
disturbances
flux density
MATLAB
levitation

All Science Journal Classification (ASJC) codes

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

Cite this

Jang, Jae Young ; Kim, Young Jae ; Chang, Ki Sung ; Chung, Yoon Do ; Lee, Chang Young ; Ko, Tae Kuk. / A research on design method and theoretical analysis of electromagnetic suspension system considering magnetic interface between coils. In: IEEE Transactions on Applied Superconductivity. 2011 ; Vol. 21, No. 3 PART 2. pp. 1523-1527.
@article{f6b9cf6fd3e6492d8fd06e0c7ed2d895,
title = "A research on design method and theoretical analysis of electromagnetic suspension system considering magnetic interface between coils",
abstract = "This paper deals with the design and operating characteristics analysis of electromagnetic suspension (EMS) system. The EMS system consists of a rail, a U-shaped iron core, a high temperature superconductor (HTS) coil, a couple of DC control coils. The HTS coil generates a high magnetic field in the U-shaped iron coil and the rail. As wall as, the U-shaped iron core can be attracted by the coupled high magnetic field. We calculated turns and operating current conditions of HTS coil considering the decay of critical current when perpendicular magnetic fields are applied to the HTS coil. In addition to the design of the HTS coil, a Linear Quadratic (LQ) control method used to design the DC control coils that control the gap distance between the rail and U-shaped iron core. That is, if the gap distance is varied due to the several external disturbances, the DC control coils generated a magnetic field and then keep the constant interval. Thus, the operation of DC control coils would affect the magnetic flux density at the air gap. In this study, we verified the effect of distributions of magnetic flux density using finite element method (FEM) and MATLAB Simulink simulations. Furthermore, we numerically calculated the appropriate control current of DC control coils and the perpendicular magnetic field density on the HTS coil under the external disturbance. Based on these results, the appropriately combined current conditions and control method of EMS system to realize the stable levitation force were achieved.",
author = "Jang, {Jae Young} and Kim, {Young Jae} and Chang, {Ki Sung} and Chung, {Yoon Do} and Lee, {Chang Young} and Ko, {Tae Kuk}",
year = "2011",
month = "6",
day = "1",
doi = "10.1109/TASC.2010.2091245",
language = "English",
volume = "21",
pages = "1523--1527",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "3 PART 2",

}

A research on design method and theoretical analysis of electromagnetic suspension system considering magnetic interface between coils. / Jang, Jae Young; Kim, Young Jae; Chang, Ki Sung; Chung, Yoon Do; Lee, Chang Young; Ko, Tae Kuk.

In: IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3 PART 2, 5643151, 01.06.2011, p. 1523-1527.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A research on design method and theoretical analysis of electromagnetic suspension system considering magnetic interface between coils

AU - Jang, Jae Young

AU - Kim, Young Jae

AU - Chang, Ki Sung

AU - Chung, Yoon Do

AU - Lee, Chang Young

AU - Ko, Tae Kuk

PY - 2011/6/1

Y1 - 2011/6/1

N2 - This paper deals with the design and operating characteristics analysis of electromagnetic suspension (EMS) system. The EMS system consists of a rail, a U-shaped iron core, a high temperature superconductor (HTS) coil, a couple of DC control coils. The HTS coil generates a high magnetic field in the U-shaped iron coil and the rail. As wall as, the U-shaped iron core can be attracted by the coupled high magnetic field. We calculated turns and operating current conditions of HTS coil considering the decay of critical current when perpendicular magnetic fields are applied to the HTS coil. In addition to the design of the HTS coil, a Linear Quadratic (LQ) control method used to design the DC control coils that control the gap distance between the rail and U-shaped iron core. That is, if the gap distance is varied due to the several external disturbances, the DC control coils generated a magnetic field and then keep the constant interval. Thus, the operation of DC control coils would affect the magnetic flux density at the air gap. In this study, we verified the effect of distributions of magnetic flux density using finite element method (FEM) and MATLAB Simulink simulations. Furthermore, we numerically calculated the appropriate control current of DC control coils and the perpendicular magnetic field density on the HTS coil under the external disturbance. Based on these results, the appropriately combined current conditions and control method of EMS system to realize the stable levitation force were achieved.

AB - This paper deals with the design and operating characteristics analysis of electromagnetic suspension (EMS) system. The EMS system consists of a rail, a U-shaped iron core, a high temperature superconductor (HTS) coil, a couple of DC control coils. The HTS coil generates a high magnetic field in the U-shaped iron coil and the rail. As wall as, the U-shaped iron core can be attracted by the coupled high magnetic field. We calculated turns and operating current conditions of HTS coil considering the decay of critical current when perpendicular magnetic fields are applied to the HTS coil. In addition to the design of the HTS coil, a Linear Quadratic (LQ) control method used to design the DC control coils that control the gap distance between the rail and U-shaped iron core. That is, if the gap distance is varied due to the several external disturbances, the DC control coils generated a magnetic field and then keep the constant interval. Thus, the operation of DC control coils would affect the magnetic flux density at the air gap. In this study, we verified the effect of distributions of magnetic flux density using finite element method (FEM) and MATLAB Simulink simulations. Furthermore, we numerically calculated the appropriate control current of DC control coils and the perpendicular magnetic field density on the HTS coil under the external disturbance. Based on these results, the appropriately combined current conditions and control method of EMS system to realize the stable levitation force were achieved.

UR - http://www.scopus.com/inward/record.url?scp=79957887357&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79957887357&partnerID=8YFLogxK

U2 - 10.1109/TASC.2010.2091245

DO - 10.1109/TASC.2010.2091245

M3 - Article

AN - SCOPUS:79957887357

VL - 21

SP - 1523

EP - 1527

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 3 PART 2

M1 - 5643151

ER -