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Theoretical Analysis and Research on Support Reconstruction Control of Magnetic Bearing with Redundant Structure [PDF]

open access: yesSensors
At present, the redundant structures are one of the most effective methods for solving magnetic levitation bearing coil failure. Coil failure causes residual effective magnetic poles to form different support structures and even asymmetrical structures ...
Huaqiang Sun, Zhiqin Liang, Baixin Cheng
doaj   +2 more sources

Design for Reducing Bearing Force Ripple and Torque Ripple of Integrated Magnetic Bearing Motor through Halbach Array

open access: yesEnergies, 2023
When a magnetic bearing is used in the design of a high-speed motor, no friction and wear occur because of the principle of magnetic levitation; however, the size of the entire system increases.
In-Jun Yang   +4 more
doaj   +1 more source

Ideas for research and development of domestic motor-driven magnetic bearing centrifugal compressor set for pipelines

open access: yesYou-qi chuyun, 2022
Compared with oil lubricated bearing compressor sets, the magnetic bearing compressor sets are more efficient, reliable, safe and environment-friendly.
Pan LIU, Jianchen LIU
doaj   +1 more source

Structural design and magnetic field analysis on magnetic fluid lubricated bearings

open access: yesThe Journal of Engineering, 2022
A structural model of a bearing is proposed based on a general standard bearing structure and magneto‐fluidic lubrication, and the magnetic field of the bearing lubrication gap is analyzed under the action of an applied magnetic source. Results show that
Ao Wang, Jiabao Pan, Jin Ye, Huaibiao Wu
doaj   +1 more source

Suppression of Harmonic Current in Magnetic Bearing–Rotor System with Redundant Structure

open access: yesApplied Sciences, 2022
The magnetic bearing–rotor system has the advantages of no mechanical friction and active vibration control. A magnetic bearing with redundant structures provides an effective method to apply fault-tolerant control to the magnetic bearing–rotor system ...
Baixin Cheng   +4 more
doaj   +1 more source

Magnetic Circuit Design and Experiment of Novel Lorentz Magnetic Bearing with Double Air Gap

open access: yesEnergies, 2022
A uniform magnetic density distribution in the air gap is key for the Lorentz magnetic bearing to achieve high precision control and large torque output.
Shinan Cao   +5 more
doaj   +1 more source

Instability Study of Magnetic Journal Bearing under S-CO2 Condition

open access: yesApplied Sciences, 2021
A supercritical CO2 (S-CO2)-cooled Brayton cycle is under development for distributed power applications for remote regions. In order to successfully develop it, issues of controlling shaft levitation with bearings have to be solved. From several studies,
Dokyu Kim, SeungJoon Baik, JeongIk Lee
doaj   +1 more source

Response analysis of random base excitation ona magnetic bearing rotor system [PDF]

open access: yesMATEC Web of Conferences, 2019
The magnetic bearing-rotor system is subject to various external disturbances in practical application. Under certain control conditions, the random response characteristics of the magnetic bearing-rotor system are a particular concern.
Chen Jinping   +4 more
doaj   +1 more source

Displacement Estimation of Self-Sensing Magnetic Bearings Based on Biorthogonal Spline Wavelet

open access: yesIEEE Access, 2021
By collecting the ripple current in the control coil, the self-sensing magnetic bearings can obtain rotor displacement information without a displacement sensor, which has the advantages of low cost and high integration.
Haojie Xiong   +4 more
doaj   +1 more source

Design and Implementation of a Fault-Tolerant Magnetic Bearing Control System Combined With a Novel Fault-Diagnosis of Actuators

open access: yesIEEE Access, 2021
Although magnetic bearings are generally reliable, an important concern for machine applications is fault tolerance. The fault-tolerant operation of a magnetic bearing system can be realized through the identification and isolation of fault actuators and
Xin Cheng   +5 more
doaj   +1 more source

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