Design Consideration of a High Temperature Superconductor Maglev Vehicle System

Wang, J.S.; Wang, S.Y.; Deng, Changyan; Zeng, Youwen; Song, Honghai; Zheng, Jun; Wang, Xinzhi; Huang, Haiyu; Li, Fu

doi:10.1109/tasc.2005.849629

Cited by 11 publications

(8 citation statements)

References 8 publications

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“…This unique feature motivated the development of superconducting magnetic bearings (SMBs) [1][2][3][4]. They have been customized for numerous applications, including maglev vehicles [5][6][7], magnetic launchers [8,9], flywheel energy storage systems [10][11][12][13][14][15][16][17], motors [18], and cosmic microwave background polarimeters [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Superconducting magnetic bearings simulation using an H-formulation finite element model

Quéval

Liu

Yang

et al. 2018

Supercond. Sci. Technol.

102

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The modeling of superconducting magnetic bearing (SMB) is of great significance for predicting and optimizing its levitation performance before construction. Although lots of efforts have been made in this area, it still remains some space for improvements. Thus the goal of this work is to report a flexible, fast and trustworthy H-formulation finite element model. First the methodology for modeling and calibrating both bulk-type and stack-type SMB is summarized. Then its effectiveness for simulating SMBs in 2-D, 2-D axisymmetric and 3-D is evaluated by comparison with measurements. In particular, original solutions to overcome several obstacles are given: clarification of the calibration procedure for stack-type and bulk-type SMBs, details on the experimental protocol to obtain reproducible measurements, validation of the 2-D model for a stack-type SMB modeling the tapes real thickness, implementation of a 2-D axisymmetric SMB model, implementation of a 3-D SMB model, extensive validation of the models by comparison with experimental results for field cooling and zero field cooling, for both vertical and lateral movements. The accuracy of the model being proved, it has now a strong potential for speeding up the development of numerous applications including maglev vehicles, magnetic launchers, flywheel energy storage systems, motor bearings and cosmic microwave background polarimeters.

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Section: Introductionmentioning

confidence: 99%

Superconducting magnetic bearings simulation using an H-formulation finite element model

Quéval

Liu

Yang

et al. 2018

Supercond. Sci. Technol.

102

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show abstract

“…Conversely, for designing a cylindrical levitation system, the maximum levitation force can be evaluated using Eqs. ( 5) to (8) by taking an arbitrarily large value for J sc and varying t between 0 and t/2. The range of working heights in which levitation is stable can be a priori determined as a function of the selected cooling height from the knowledge of the field generated by the magnet using Eq.…”

Section: Advantages and Limitations Of The Modelmentioning

confidence: 99%

“…Superconducting magnetic levitation (SML) involves the stable levitation of superconductor(s) above a source of magnetic field. The most promising applications of this technology are the autostabilized high-velocity rotating magnetic bearings with no mechanical contacts [1][2][3][4] on the one hand, and magnetic levitating (MAGLEV) trains on the other hand [5][6][7][8][9][10]. The first MAGLEV train has been running on a demonstration track at the Federal University of Rio de Janeiro in 2014 [11] (see Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Calculation of the Forces Applied to a Superconductor in Levitation in an Inhomogeneous Magnetic Field

Bernstein¹,

Xing²,

Noudem³

2022

RPM

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Stable levitation of systems consisting of a magnetic source and a superconductor is actively investigated due to the promising applications of this technology. While huge efforts have been made for modeling these setups with numerical simulations, analytical models, in spite of their use being limited to devices with a high degree of symmetry, can bring precious information on certain characteristics of levitating systems. Summarizing our previous work in the field, we present the mean-field model that we have proposed to reproduce the interactions between a magnetic source and a superconductor. We show that the model provides an estimation of the surface critical current density of the shielding currents flowing in the superconductor and an estimation of the thickness, t, of the layer carrying the currents. We emphasize that the calculated values of t are an increasing function of temperature, which tend toward the Meissner limit at low temperatures. Finally, we determine the condition that ensures stable levitation of axisymmetric systems.

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“…In comparison, if magnetic levitation is achieved with a type I superconductor, the superconductor has a single defined equilibrium position about which it can only orbit or oscillate [9]. As a result, auto-stabilized rotating bearings have been demonstrated with HTS and NdFeB magnets [10][11][12][13] and investigations into levitating trains have been carried out [14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Superconducting magnetic levitation: principle, materials, physics and models

Bernstein

Noudem

2020

Supercond. Sci. Technol.

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In contrast to the interaction between two magnets with opposite magnetization directions, the interaction between a permanent magnet and a superconductor can be stable and result in magnetic levitation. This property can be exploited for the development of high velocity rotating bearings with no mechanical contacts and for the development of levitated trains. In this review, we focus on this latter application. After a brief description of the other techniques developed for levitating trains and the resulting achievements, we describe the magnet-superconductor interaction and recall the achievements in this field. We then give insights into the properties of the employed magnets and arrangement of magnets and we detail the characteristics and the fabrication processes of the most frequently used superconductors. Focusing on physics, we detail the procedures generally used for measuring the vertical (levitation) and the lateral (guidance) forces in magnetic levitation and the results obtained from experiments. We detail and give a critical review of the various models proposed for reproducing the force measurements. In the conclusion we discuss the possible future developments of the technology.

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Design Consideration of a High Temperature Superconductor Maglev Vehicle System

Cited by 11 publications

References 8 publications

Superconducting magnetic bearings simulation using an H-formulation finite element model

Superconducting magnetic bearings simulation using an H-formulation finite element model

Calculation of the Forces Applied to a Superconductor in Levitation in an Inhomogeneous Magnetic Field

Superconducting magnetic levitation: principle, materials, physics and models

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