Vibration suppression in high-Tc superconducting levitation system utilizing nonlinearly coupled electromagnetic shunt damper

Masahiko Sasaki, Junki Kimura, Toshihiko Sugiura

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Superconducting levitation systems have been considered as a promising technology for implementing high-speed transport systems. A superconducting levitation system can levitate a magnet without active feedback control. However, due to the system's low damping and nonlinearity, large-amplitude nonlinear vibration can easily occur. Although an electromagnetic shunt damper can suppress the vibration without contact by transforming the vibrational kinetic energy into electrical energy, the inductance value of the damper often becomes too large to realize practically. Therefore, we propose a new type of electromagnetic shunt damper that is nonlinearly coupled with the levitated body, and its value of inductance can be reduced to one-fourth the conventional one. First, we evaluate the levitation force via the advanced mirror image method. Next, we perform numerical calculation via the Runge-Kutta method and nonlinear analysis via the method of multiple scales. We obtain the system's frequency responses via both these methods. From the results, we observe that internal resonance can occur and the proposed electromagnetic shunt damper can reduce the vibration amplitude.

Original languageEnglish
Article number6966741
JournalIEEE Transactions on Applied Superconductivity
Volume25
Issue number3
DOIs
Publication statusPublished - 2015 Jun 1

Fingerprint

levitation
dampers
shunts
Inductance
retarding
electromagnetism
vibration
Runge Kutta methods
Nonlinear analysis
inductance
Kinetic energy
Vibrations (mechanical)
Feedback control
Frequency response
Magnets
Mirrors
Damping
Runge-Kutta method
electric power
feedback control

Keywords

  • Electromagnetic coupling
  • High-temperature superconductors
  • Magnetic levitation
  • Nonlinear dynamical systems
  • Vibrations

ASJC Scopus subject areas

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

Cite this

Vibration suppression in high-Tc superconducting levitation system utilizing nonlinearly coupled electromagnetic shunt damper. / Sasaki, Masahiko; Kimura, Junki; Sugiura, Toshihiko.

In: IEEE Transactions on Applied Superconductivity, Vol. 25, No. 3, 6966741, 01.06.2015.

Research output: Contribution to journalArticle

@article{bf1254bccfe140638402a07307e8c29a,
title = "Vibration suppression in high-Tc superconducting levitation system utilizing nonlinearly coupled electromagnetic shunt damper",
abstract = "Superconducting levitation systems have been considered as a promising technology for implementing high-speed transport systems. A superconducting levitation system can levitate a magnet without active feedback control. However, due to the system's low damping and nonlinearity, large-amplitude nonlinear vibration can easily occur. Although an electromagnetic shunt damper can suppress the vibration without contact by transforming the vibrational kinetic energy into electrical energy, the inductance value of the damper often becomes too large to realize practically. Therefore, we propose a new type of electromagnetic shunt damper that is nonlinearly coupled with the levitated body, and its value of inductance can be reduced to one-fourth the conventional one. First, we evaluate the levitation force via the advanced mirror image method. Next, we perform numerical calculation via the Runge-Kutta method and nonlinear analysis via the method of multiple scales. We obtain the system's frequency responses via both these methods. From the results, we observe that internal resonance can occur and the proposed electromagnetic shunt damper can reduce the vibration amplitude.",
keywords = "Electromagnetic coupling, High-temperature superconductors, Magnetic levitation, Nonlinear dynamical systems, Vibrations",
author = "Masahiko Sasaki and Junki Kimura and Toshihiko Sugiura",
year = "2015",
month = "6",
day = "1",
doi = "10.1109/TASC.2014.2374421",
language = "English",
volume = "25",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "3",

}

TY - JOUR

T1 - Vibration suppression in high-Tc superconducting levitation system utilizing nonlinearly coupled electromagnetic shunt damper

AU - Sasaki, Masahiko

AU - Kimura, Junki

AU - Sugiura, Toshihiko

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Superconducting levitation systems have been considered as a promising technology for implementing high-speed transport systems. A superconducting levitation system can levitate a magnet without active feedback control. However, due to the system's low damping and nonlinearity, large-amplitude nonlinear vibration can easily occur. Although an electromagnetic shunt damper can suppress the vibration without contact by transforming the vibrational kinetic energy into electrical energy, the inductance value of the damper often becomes too large to realize practically. Therefore, we propose a new type of electromagnetic shunt damper that is nonlinearly coupled with the levitated body, and its value of inductance can be reduced to one-fourth the conventional one. First, we evaluate the levitation force via the advanced mirror image method. Next, we perform numerical calculation via the Runge-Kutta method and nonlinear analysis via the method of multiple scales. We obtain the system's frequency responses via both these methods. From the results, we observe that internal resonance can occur and the proposed electromagnetic shunt damper can reduce the vibration amplitude.

AB - Superconducting levitation systems have been considered as a promising technology for implementing high-speed transport systems. A superconducting levitation system can levitate a magnet without active feedback control. However, due to the system's low damping and nonlinearity, large-amplitude nonlinear vibration can easily occur. Although an electromagnetic shunt damper can suppress the vibration without contact by transforming the vibrational kinetic energy into electrical energy, the inductance value of the damper often becomes too large to realize practically. Therefore, we propose a new type of electromagnetic shunt damper that is nonlinearly coupled with the levitated body, and its value of inductance can be reduced to one-fourth the conventional one. First, we evaluate the levitation force via the advanced mirror image method. Next, we perform numerical calculation via the Runge-Kutta method and nonlinear analysis via the method of multiple scales. We obtain the system's frequency responses via both these methods. From the results, we observe that internal resonance can occur and the proposed electromagnetic shunt damper can reduce the vibration amplitude.

KW - Electromagnetic coupling

KW - High-temperature superconductors

KW - Magnetic levitation

KW - Nonlinear dynamical systems

KW - Vibrations

UR - http://www.scopus.com/inward/record.url?scp=84922813145&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84922813145&partnerID=8YFLogxK

U2 - 10.1109/TASC.2014.2374421

DO - 10.1109/TASC.2014.2374421

M3 - Article

AN - SCOPUS:84922813145

VL - 25

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 3

M1 - 6966741

ER -