Abstract
A superconducting magnetic bearing can levitate a rotor without control and is expected to be applied to flywheel energy storage systems. However, because the levitation force has nonlinearity, the rotor can show nonlinear vibrations such as subharmonic resonance and superharmonic resonance. Therefore, it is necessary to suppress the amplitude of nonlinear vibration of the rotor. Recently, an 'electromagnetic shunt damper,' which can replace a dynamic vibration absorber, has been researched. The purpose of this study is to investigate whether an electromagnetic shunt damper can suppress the nonlinear vibration of a rotor supported by a superconducting magnetic bearing. We obtained the system's governing equations via an analytical model and nondimensionalized the equations. Linear analysis was performed, and we confirmed that an electromagnetic shunt damper is effective against linear systems. Furthermore, numerical calculations via the Rung-Kutta method were carried out. The obtained results show that an electromagnetic shunt damper can suppress the vibration amplitude of primary resonance and subharmonic resonance of order 1/2.
| Original language | English |
|---|---|
| Article number | 7407365 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 26 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2016 Apr 1 |
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Keywords
- Electromagnetic coupling
- Magnetic levitation
- Rotor dynamics
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
Vibration reduction of rotor supported by superconducting magnetic bearing utilizing electromagnetic shunt damp. / Sasaki, Masahiko; Sugiura, Toshihiko.
In: IEEE Transactions on Applied Superconductivity, Vol. 26, No. 3, 7407365, 01.04.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Vibration reduction of rotor supported by superconducting magnetic bearing utilizing electromagnetic shunt damp
AU - Sasaki, Masahiko
AU - Sugiura, Toshihiko
PY - 2016/4/1
Y1 - 2016/4/1
N2 - A superconducting magnetic bearing can levitate a rotor without control and is expected to be applied to flywheel energy storage systems. However, because the levitation force has nonlinearity, the rotor can show nonlinear vibrations such as subharmonic resonance and superharmonic resonance. Therefore, it is necessary to suppress the amplitude of nonlinear vibration of the rotor. Recently, an 'electromagnetic shunt damper,' which can replace a dynamic vibration absorber, has been researched. The purpose of this study is to investigate whether an electromagnetic shunt damper can suppress the nonlinear vibration of a rotor supported by a superconducting magnetic bearing. We obtained the system's governing equations via an analytical model and nondimensionalized the equations. Linear analysis was performed, and we confirmed that an electromagnetic shunt damper is effective against linear systems. Furthermore, numerical calculations via the Rung-Kutta method were carried out. The obtained results show that an electromagnetic shunt damper can suppress the vibration amplitude of primary resonance and subharmonic resonance of order 1/2.
AB - A superconducting magnetic bearing can levitate a rotor without control and is expected to be applied to flywheel energy storage systems. However, because the levitation force has nonlinearity, the rotor can show nonlinear vibrations such as subharmonic resonance and superharmonic resonance. Therefore, it is necessary to suppress the amplitude of nonlinear vibration of the rotor. Recently, an 'electromagnetic shunt damper,' which can replace a dynamic vibration absorber, has been researched. The purpose of this study is to investigate whether an electromagnetic shunt damper can suppress the nonlinear vibration of a rotor supported by a superconducting magnetic bearing. We obtained the system's governing equations via an analytical model and nondimensionalized the equations. Linear analysis was performed, and we confirmed that an electromagnetic shunt damper is effective against linear systems. Furthermore, numerical calculations via the Rung-Kutta method were carried out. The obtained results show that an electromagnetic shunt damper can suppress the vibration amplitude of primary resonance and subharmonic resonance of order 1/2.
KW - Electromagnetic coupling
KW - Magnetic levitation
KW - Rotor dynamics
UR - http://www.scopus.com/inward/record.url?scp=84975263621&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84975263621&partnerID=8YFLogxK
U2 - 10.1109/TASC.2016.2524467
DO - 10.1109/TASC.2016.2524467
M3 - Article
AN - SCOPUS:84975263621
VL - 26
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 3
M1 - 7407365
ER -