Effect of Parameters of an Electromagnetic Shunt Damper on Whirling Amplitude Reduction of a Rotor Supported by a Superconducting Magnetic Bearing

Masahiko Sasaki, Toshihiko Sugiura

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2 Citations (Scopus)


A superconducting magnetic bearing can levitate a rotor without contact. However, the rotor can whirl with large amplitude. To reduce the whirling amplitude, we focused on an electromagnetic shunt damper that is appliable to a rotor system. In this paper, an analysis considering influence of magnetic flux density distribution on dynamics of the rotor was carried out. From linearized and nondimensionalized governing equations, we obtained one parameter that determines the damper's effectiveness. Further, numerical calculation was performed and the optimum value concerning the dimensions of the electromagnetic shunt damper was obtained.

Original languageEnglish
Article number7817826
JournalIEEE Transactions on Applied Superconductivity
Issue number4
Publication statusPublished - 2017 Jun 1



  • Electromagnetic coupling
  • high-temperature superconductors
  • magnetic levitation
  • nonlinear dynamical systems
  • vibrations

ASJC Scopus subject areas

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

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