Simulations and Tests of Superconducting Linear Bearings for a MAGLEV Prototype

Dias, D. H. N.; Motta, Edson; Sotelo, Guilherme Gonçalves; Andrade, R. de; Stephan, R.M.; Kuehn, L.; Haas, O. de; Schultz, L.

doi:10.1109/tasc.2009.2019203

Cited by 33 publications

(16 citation statements)

References 5 publications

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“…Some works have modeled the FM-PM guideways by using FEM. 21,22 Although these works simulate the magnetic-flux concentration in the FM parts, they do not take into account the possible changes that the currents of the SC could introduce in magnetic response of the FM. One of the objectives of this work is to study these changes and the mutual interaction between a SC and a FM.…”

mentioning

confidence: 99%

Shaping magnetic fields with soft ferromagnets: Application to levitation of superconductors

Del-Valle

Agramunt-Puig

Navau

et al. 2012

Journal of Applied Physics

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Soft ferromagnetic materials have an important role in technology, for increasing magnetic field in specific regions, as in the core of transformers, and for properly modifying the magnetic field in particular shapes. Here we develop a numerical model that allows study of the response of a soft ferromagnet bar with arbitrary cross section and infinite susceptibility when a magnetic field with translational symmetry is applied. This theoretical tool will enable us to analyze the shape and position of the soft ferromagnet to properly modify the magnetic field in the areas of interest. The model can also simulate hybrid systems that contain a superconducting bar as well, considering the mutual interaction between the soft ferromagnetic and the superconducting materials. In particular, we analyze the levitation force of a superconducting bar immersed in the magnetic field created by a guideway of two permanent magnet bars with uniform horizontal magnetization and a soft ferromagnet bar in between. The results show that by placing the soft ferromagnet with an optimized height the levitation force is enhanced.

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confidence: 99%

Shaping magnetic fields with soft ferromagnets: Application to levitation of superconductors

Del-Valle

Agramunt-Puig

Navau

et al. 2012

Journal of Applied Physics

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“…These bulk materials, in particular YBCO, are manufactured as single domain samples via melt-textured-growth [16]. Applications [17] and processing are described elsewhere as levitation is not considered as an application in the energy technology sector.…”

Section: Processing Of Hts Materialsmentioning

confidence: 99%

Energy and superconductors – applications of high-temperature-superconductors

Bäcker¹

2011

Zeitschrift Für Kristallographie

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Abstract. More than 20 years after the discovery of hightemperature-superconductors (HTS) first applications in the energy sector are now becoming commercially attractive. Whereas still high end applications of low-temperaturesuperconductors (LTS) like NMR or MRI systems are the major drivers for industrial production, HTS based systems promise broader use in energy technology over the next few years. Due to their superior performance HTS materials enable more compact and lighter electric devices as well as an unbeatable improvement in energy efficiency. Moreover new devices like fault current limiters (FCL) are under development and field tests exhibit so far unknown properties for future electric grid design. Prototypes and first commercial systems like cables, generators, motors, FCL were successfully commissioned in the last few years. Based on these test results HTS systems will contribute significantly to the future key challenges in energy technology by reducing CO 2 -emmission due to their outstanding efficiency and to the security of energy supply.

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“…13 Figure 7 presents the induced current in a superconductor in the presence of an external fi eld of a PM. The fi eld penetration depends on the magnitude of the external magnetic fi eld.…”

Section: Understanding Forces On Superconductorsmentioning

confidence: 99%

A Didactic Comparison of Magnetic Forces

Sotelo

Stephan

Branco

et al. 2011

International Journal of Electrical Engineering & Education

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The objective of this paper is to present a didactic approach to the calculation of forces generated on permanent magnets, ferromagnetic and diamagnetic materials, superconductors and conductors. A phenomenological view is applied to simplify the understanding needed in undergraduate courses of electromagnetic theory and electric energy conversion. Simple mathematical relations and experiments support the basic concepts.Forces that do not need physical contact, like electromagnetic forces, intrigue everyone. Moreover, an interest in magnetic forces is technically justifi ed by several applications related to energy conversion. Therefore, a clear understanding of electromagnetic forces is important for electric engineering students.Typicallly, there are four ways to determine these forces: 1-3

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Simulations and Tests of Superconducting Linear Bearings for a MAGLEV Prototype

Cited by 33 publications

References 5 publications

Shaping magnetic fields with soft ferromagnets: Application to levitation of superconductors

Shaping magnetic fields with soft ferromagnets: Application to levitation of superconductors

Energy and superconductors – applications of high-temperature-superconductors

A Didactic Comparison of Magnetic Forces

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