Dynamic Response Characteristics of a High-Temperature Superconducting Maglev Vehicle under Laterally Unbalanced Load Conditions

Xu, Yanyi; Jiang, Donghui; T., G.; Deng, Zigang; Zheng, Jun; Zhang, W. H.

doi:10.1007/s10948-013-2252-y

Cited by 14 publications

(3 citation statements)

References 11 publications

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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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Section: Introductionmentioning

confidence: 99%

Superconducting magnetic levitation: principle, materials, physics and models

Bernstein

Noudem

2020

Supercond. Sci. Technol.

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“…In 2000, the dynamics of an HTS Maglev model vehicle were analyzed, with measurements of random vibration [4]. This type of research continued later, as more interest regarding HTS Maglevs grew, and so studies regarding dynamic response were more available [5][6][7][8]. However, these studies are all incident with FC technology using a rectangular geometry for bulks and PM.…”

Section: Introductionmentioning

confidence: 99%

Study of a cylindrical geometry design for a zero field cooled Maglev system

Silva

Branco

2019

Supercond. Sci. Technol.

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This paper proposes a new cylindrical geometry design for the zero field cooled (ZFC) Maglev system. In previous research, a ZFC-Maglev of rectangular geometry was designed and an experimental prototype, with a magnetic track, was developed. Studies on this system showed that the Maglev is prone to derailing, mainly due to the nonlinear nature of the guidance forces. A cylindrical geometry is proposed which allows to solve those situations, making the ZFC-Maglev inherently stable and with a linear lateral restitution force. A 3D model was made, using COMSOL Multiphysics®, where several cylindrical geometries were developed, to study the viability of these solutions regarding the levitation and guidance forces. It is shown that the cylindrical geometry is a viable solution, being naturally stable and having a linear response to lateral forces. However, the cylindrical geometry presents two major drawbacks, which are the limitation of lateral movement and the possibility of flux pinning occurring between the HTS and the permanent magnets.

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“…Motta et al made dynamic tests on an optimized linear superconducting levitation system [3,4]. Xu et al researched the dynamic response characteristics of HTS maglev under laterally unbalanced load conditions [5]. At present, several HTS maglev short-distance test lines have been built and a lot of design optimizations were implemented at the same time, but there are still many problems unsolved.…”

Section: Introductionmentioning

confidence: 99%