scholarly journals Multi-hybrid Active Magnetic Bearing Design for Milling Spindle Applications

2020 ◽  
Vol 32 (1) ◽  
pp. 375
Author(s):  
Rong-Mao Lee ◽  
Zhi-Bin Wu ◽  
Cheng-Chi Wang ◽  
Tsung-Chia Chen
Keyword(s):  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Bearing Design ◽  
Milling Spindle

scholarly journals Transient Response Technique Applied to Active Magnetic Bearing Machinery During Rotor Drop

1996 ◽  
Vol 118 (2) ◽  
pp. 154-163 ◽  
Author(s):  
T. Ishii ◽  
R. Gordon Kirk
Keyword(s):  
Transient Response ◽  
New Technology ◽  
Contact Point ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Flexible Rotor ◽  
Theoretical Formulation ◽  
Rolling Element ◽  
Bearing Design ◽  
Amb System

The active magnetic bearing (AMB) is a relatively new technology which has many advantages compared with conventional bearing design. In an AMB system, the rolling-element back-up bearings are indispensable to protect the magnetic bearing rotor and stator, and other stationary seals along the rotor shaft. In this paper, a theoretical formulation is proposed and solved numerically to examine the transient response of the flexible rotor, from the time just previous to when the AMB shuts down and including the rotor drop onto the back-up bearing. The backward whirl of the rotor, which may lead to the destructive damage of the machinery, has been analytically predicted at very light support damping and very high support damping. Also, the vibration due to the nonlinearity of the contact point geometry has been included in the analysis. The influence of the support damping on the displacement of the disk and also the contact force between the journal and the inner-race of the back-up bearing have been computed for various rotor system parameters. By comparing these results with the optimum support damping for the simple flexible rotor model, it is shown that this support damping optimization can be applicable for specifying the required optimum range of support damping for the back-up bearings of AMB systems.

Innovative Active Magnetic Bearing Design to Reduce Cost and Energy Consumption

2009 ◽  
Vol 29 (5) ◽  
pp. 406-420 ◽  
Author(s):  
Nan-Chyuan Tsai ◽  
Chao-Wen Chiang ◽  
Heng-Yi Li
Keyword(s):  
Energy Consumption ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Bearing Design

scholarly journals Transient Response Technique Applied to Active Magnetic Bearing Machinery During Rotor Drop

1991 ◽  
Author(s):  
Toshiyasu Ishii ◽  
R. Gordon Kirk
Keyword(s):  
Transient Response ◽  
New Technology ◽  
Contact Point ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Theoretical Formulation ◽  
Rolling Element ◽  
Bearing Design ◽  
Amb System ◽  
Inner Race

Abstract The active magnetic bearing (AMB) is a relatively new technology which has many advantages compared with conventional bearing design. In an AMB system, the rolling-element back-up bearings are indispensable to protect the magnetic bearing rotor and stator, and other stationary seals along the rotor shaft. In this paper, a theoretical formulation is proposed and solved numerically to examine the transient response of the flexible rotor, from the time just previous to the AMB shuts down and including the rotor drop onto the back-up bearing. The backward whirl of the rotor, which may lead to the destructive damage of the machiner, has been analytically predicted at very light support damping and very high support damping. Also, the vibration due to the non-linearity of the contact point geometry has been included in the analysis. The influence of the support damping on the displacement of the disk and also the contact force between the journal and the inner-race of the back-up bearing have been computed for various rotor system parameters.

scholarly journals State and Art of the Active Magnetic Bearing Design and Anlysis by Using MATLAB

2014 ◽  
Vol 3 (11) ◽  
pp. 13168-13175
Author(s):  
GAYA THRI.S ◽  
SUBA KARAN.K ◽  
SOM SHEKAR.B ◽  
REHMAN. S.K ◽  
RAVI V ANGADI ◽  
...  
Keyword(s):  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Bearing Design

Cooling of an Active Magnetic Bearing

2021 ◽  
Vol 64 (2) ◽  
pp. 22-31
Author(s):  
Yuri Ivannikov ◽  
◽  
Aleksandr Goriachkin ◽  
Dmitry Bragin ◽  
◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Thermal Condition ◽  
Cooling System ◽  
Analytical Techniques ◽  
Heat Pipes ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Maximum Temperature ◽  
Model Parameters ◽  
Bearing Design

In this paper temperature field of the magnetic bearing of a gas compressor unit was considered. A two dimension mathematical model was prepared. Model parameters were calculated with using of analytical techniques and laws of similarity. In result of numerical simulation temperature distribution of the magnetic bearing was made specific. Possibility of using of heat pipes for a magnetic bearing cooling improve was consid-ered. In result of this research temperature distribution of the magnetic bearing was identified. The particular characteristic of this a magnetic bearing design is significant influence of more hot rotor on coil thermal condition. Improve of rotor cooling based on using of heat pipes can decrease maximum temperature of rotor and coil stator. Found results can be using for development of cooling system of an active magnetic bearing.

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