Superconducting bearings for a LHe transfer pump

Kloeppel, S; Muehsig, C; Funke, Thomas; Haberstroh, Ch.; Hesse, Ullrich; Lindackers, D.; Zielke, S; Sass, P; Schoendube, R

doi:10.1088/1757-899x/278/1/012029

Cited by 6 publications

(6 citation statements)

References 3 publications

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“…The MgB 2 superconductors with a bulk density of about 2.63 g/cm 3 are the lightest materials among practical superconductors. This makes MgB 2 attractive for portable applications [ 143 , 144 , 145 , 146 , 147 , 148 , 149 , 150 , 151 , 152 , 153 , 154 , 155 , 156 , 157 , 158 , 159 , 160 , 161 , 162 , 163 , 164 , 165 , 166 , 167 , 168 , 169 , 170 , 171 , 172 , 173 , 174 , 175 , 176 , 177 , 178 , 179 ], especially for aviation and space technology [ 26 , 146 , 171 ].…”

Section: Application Of Bulk Mgb 2 Superconductorsmentioning

confidence: 99%

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Bulk MgB2 Superconducting Materials: Technology, Properties, and Applications

Prikhna,

Sokolovsky,

Moshchil

2024

Materials

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The intensive development of hydrogen technologies has made very promising applications of one of the cheapest and easily produced bulk MgB2-based superconductors. These materials are capable of operating effectively at liquid hydrogen temperatures (around 20 K) and are used as elements in various devices, such as magnets, magnetic bearings, fault current limiters, electrical motors, and generators. These applications require mechanically and chemically stable materials with high superconducting characteristics. This review considers the results of superconducting and structural property studies of MgB2-based bulk materials prepared under different pressure–temperature conditions using different promising methods: hot pressing (30 MPa), spark plasma sintering (16–96 MPa), and high quasi-hydrostatic pressures (2 GPa). Much attention has been paid to the study of the correlation between the manufacturing pressure–temperature conditions and superconducting characteristics. The influence of the amount and distribution of oxygen impurity and an excess of boron on superconducting characteristics is analyzed. The dependence of superconducting characteristics on the various additions and changes in material structure caused by these additions are discussed. It is shown that different production conditions and additions improve the superconducting MgB2 bulk properties for various ranges of temperature and magnetic fields, and the optimal technology may be selected according to the application requirements. We briefly discuss the possible applications of MgB2 superconductors in devices, such as fault current limiters and electric machines.

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Section: Application Of Bulk Mgb 2 Superconductorsmentioning

confidence: 99%

“…The integral part of hydrogen energetics would be systems for the production, salving, and transportation of liquid hydrogen [ 157 ]. Liquid hydrogen systems could be one of the first fields of application of MgB 2 motors and submersible liquid hydrogen (LH) pumps.…”

Section: Application Of Bulk Mgb 2 Superconductorsmentioning

confidence: 99%

Bulk MgB2 Superconducting Materials: Technology, Properties, and Applications

Prikhna,

Sokolovsky,

Moshchil

2024

Materials

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“…They are self-stabilised devices, suitable for high-speed operation with simplified cooling system [1]- [3]. They presents technically innovative and generally are built with high-temperature superconductors (HTS) bulk type material, therefore they are passive systems [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

HTS-Tape Magnetic Bearing for Ultra High-Speed Turbo Motor

Oliveira

Zeng

Pei

et al. 2023

IEEE Trans. Appl. Supercond.

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This paper aims to design superconducting magnetic bearing using HTS tape for a ultra high-speed turbo motor operating up to 120 000 rpm. Despite being a recent technology compared to conventional magnetic bearings, HTS passive bearings have many interesting features, such as reduced dimensions, easy implementation and excellent dynamic response at high speed. The results of the finite element simulation are promising as the levitation forces and the stiffness of the superconductor bearing are compatible with the design requirements. The main contribution of this paper lies in the use of short-circuited HTS coils, unlike previous systems that used HTS bulk.

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“…The HTS stator is made in the form of a hollow cylinder, a cylindrical rotor is made of a permanent magnets and located inside the stator. Cylindrical bearings were previously used for large-scale flywheel energy storage systems [4], for helium pumps [25]. This configuration is well suited for creating a bearing based on CC-tapes as addressed in [21,22].…”

Section: Introductionmentioning

confidence: 99%

Scalable superconductive magnetic bearing based on non-closed CC tapes windings

Osipov

Anishenko

Starikovskii

et al. 2021

Supercond. Sci. Technol.

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A new type of scalable high-temperature superconducting magnetic bearing is proposed. The bearing is based on the multilayer open windings made of coated conductor-tapes (CC-tapes). To demonstrate the possibility of manufacturing such a bearing construction we have built a working prototype and studied its characteristics. The manufactured model of bearing includes a stator, consisting of three multilayer rings (CC-tapes pancake coils) of 12 mm CC-tape and a composite rotor consisting of three rings of permanent magnets, each composed of 16 NdFeB 10 × 10 mm permanent magnets. We showed a contactless levitation of rotor relative to stator, as well as rotation of rotor and we measured load curves, namely the dependence of the rotor displacement on restoring force for axial and radial loads. Numerical simulation of bearing load characteristics has been carried out by the finite element method in the Comsol Multiphysics software. The calculation results are in a good agreement with the experimental data.

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Superconducting bearings for a LHe transfer pump

Cited by 6 publications

References 3 publications

Bulk MgB2 Superconducting Materials: Technology, Properties, and Applications

Bulk MgB2 Superconducting Materials: Technology, Properties, and Applications

HTS-Tape Magnetic Bearing for Ultra High-Speed Turbo Motor

Scalable superconductive magnetic bearing based on non-closed CC tapes windings

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