A novel integrated 4-DOF radial hybrid magnetic bearing for MSCMG

Sun, Jianfei; Ju, Ziyan; Han, Wei; Liu, Gang

doi:10.1016/j.jmmm.2016.07.070

Cited by 11 publications

(4 citation statements)

References 16 publications

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“…In order to analytically assess the behavior of the magnetic bearing, magnetic circuits are used. Fluxes are obtained from the magnetic circuit and forces calculated by the principle of virtual work [3]. Finally the angle of the rotor surface is taken in account [2].…”

Section: Magnetic Circuitmentioning

confidence: 99%

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Thrust actuator with passive restoration force for wide gap magnetic bearings

Royo-Silvestre

Beato-López

Castellano-Aldave

et al. 2019

Journal of Magnetism and Magnetic Materials

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Active thrust magnetic bearings provide an axial force to balance the moving parts of machines. However, most devices produce null or unbalancing passive forces. Furthermore, reported designs usually feature very small axial and radial gaps. This paper presents a thrust actuator for wide axial gaps that produces both passive and active restoring axial forces. It features a long biconical rotor and a stator housing a single winding and two permanent magnets. Simulations are done using finite-element-analysis (FEA) and compared to magnetic circuit analysis and experimental results from a prototype with a diameter of 48 mm and 20 mm axial displacement.

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Section: Magnetic Circuitmentioning

confidence: 99%

“…6). To estimate Fy a different approach is needed, PMs are modeled by a magnetomotive force Fpm and a reluctance Rpm in series [3,7]. To simplify, iron reluctance, control current and axial displacement are ignored (I = 0; z = 0).…”

Section: Magnetic Circuitmentioning

confidence: 99%

Thrust actuator with passive restoration force for wide gap magnetic bearings

Royo-Silvestre

Beato-López

Castellano-Aldave

et al. 2019

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

show abstract

“…This bearing can reduce the number of control winding turns, the volume, weight, and power loss, and also improve the space utilization and magnetoelectric efficiency. 13 Furthermore, since it can generate a greater magnetic force than an active magnetic bearing with the same amount of current, 12 it has higher work efficiency and a broad application prospect in the fields of energy storage flywheel, 14 high-speed precision machine tool, 3 compressor, 12 gyroscope, 15 and medical treatment. 16 Tatsuya et al.…”

Section: Introductionmentioning

confidence: 99%

Optimization and dynamic characteristics of a new type of permanent magnet bias bearing

Xiao

Xiwu

Cheng

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Unlike traditional magnetic thrust bearings, a new type of permanent magnet biased bearing structure made of soft magnetic composites in the bevel gear coupled rotor system was proposed that requires both lower eddy currents and greater thrust force. This paper presents the optimization of structure parameters, analysis of magnetic field and dynamic stiffness for two kinds of permanent magnet biased bearing. Firstly, the structural parameters for the bearing were optimized based on the adaptive particle swarm optimization. Secondly, the dynamic magnetic flux distribution for the permanent magnet biased bearing made of carbon steel at 1000 Hz was obtained by finite element method. Then, the equivalent reluctance models for the new type of permanent magnet biased bearing considering the effect of eddy currents are derived. Finally, based on the equivalent reluctance models, the dynamic force–current factor and force–displacement factor are given. The results show that the permanent magnet biased bearing made of soft magnetic composites can provide more stable electromagnetic force and larger bandwidth in the frequency range of 1000 Hz, and have greater electromagnetic force at the same frequency comparing with that made of carbon steel.

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“…Nowadays magnetic suspension technology is widely employed in various fields of high speed rotating and linear motions due to its advantages of no friction, micro vibration, high precision and long service life. For the rotating motion, the magnetic bearing is always taken as a core component and applied in magnetically suspended motor, magnetically suspended flywheel and magnetically suspended control moment gyroscope [1]- [3]. For the linear motion, the levitation and guidance magnets are applied in maglev train which has been researched for a long time and realized commercial operation in many countries such as China, Japan, South Korea and so on [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of a Novel Guidance Magnet for High-Speed Maglev Train

et al. 2019

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This paper proposes a novel guidance magnet with 7 magnet poles for application in high speed maglev train. Its configuration and working principle are introduced in detail. Mathematical models of the guidance force and moment are established accurately by equivalent magnetic circuit method (EMCM), from which the relationships of guidance force -control current -guidance gap and moment -current changeangular deflection are derived. Finite element method (FEM) is also applied to analyze the performances and characteristics of the novel guidance magnet. The analysis results are in good agreement with those calculated by EMCM, which is helpful in designing, optimizing and controlling the guidance system. The comparisons are carried out between the novel and conventional guidance magnets. The contrast results indicate that the proposed novel guidance magnet possesses better performances compared to the conventional structure, especially the superior guidance capability and lower power loss. Finally, the relationship of guidance forcecontrol current under the nominal guidance gap is validated by a test bench for magnet performance.

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A novel integrated 4-DOF radial hybrid magnetic bearing for MSCMG

Cited by 11 publications

References 16 publications

Thrust actuator with passive restoration force for wide gap magnetic bearings

Thrust actuator with passive restoration force for wide gap magnetic bearings

Optimization and dynamic characteristics of a new type of permanent magnet bias bearing

Modeling and Analysis of a Novel Guidance Magnet for High-Speed Maglev Train

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