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

doi:10.1109/TASC.2017.2653225

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

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

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 language	English
Article number	7817826
Journal	IEEE Transactions on Applied Superconductivity
Volume	27
Issue number	4
DOIs	https://doi.org/10.1109/TASC.2017.2653225
Publication status	Published - 2017 Jun

Keywords

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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10.1109/TASC.2017.2653225

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

abstract = "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.",

keywords = "Electromagnetic coupling, high-temperature superconductors, magnetic levitation, nonlinear dynamical systems, vibrations",

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Y1 - 2017/6

N2 - 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.

AB - 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.

KW - Electromagnetic coupling

KW - high-temperature superconductors

KW - magnetic levitation

KW - nonlinear dynamical systems

KW - vibrations

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

Abstract

Keywords

ASJC Scopus subject areas

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