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Impact of Magnetic Substrate on Dynamic Loss and Magnetization Loss of HTS Coated Conductors
IEEE Transactions on Applied Superconductivity, 2022Direct current carrying Type II superconductors present a dc electric field under external perpendicular AC magnetic field, commonly referred to as “dynamic resistance effect”. Two kinds of AC losses occur in this situation: dynamic loss due to the interaction between the DC current and moving fluxons, and magnetization loss due to shielding current ...
J. Hu +10 more
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Loss of magnetism in CePd2−xNixAl3
Physica B: Condensed Matter, 2002Hexagonal CePd2-xNixAl3 exhibits a crossover from a Kondo lattice showing magnetic order at TN ? 2.8 K for x = 0.2 to intermediate valence (IV) for x ? 2. Though TN(x) is weakly affected upon Pd/Ni substitution before vanishing at finite temperature, the Kondo temperature TK progressively increases. Above x ? 0.3 the phase boundary no longer exists and
Bauer, Ernst +5 more
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Materials Science and Engineering: B, 1998
The application of HTSC bulk materials in magnetic bearings requires an understanding and minimization of the friction in such systems. Since the rotors in these bearings are not completely axially symmetric, their rotation generates an ac magnetic field acting on the superconductors and the metallic components of the arrangement.
M. Zeisberger, W. Gawalek
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The application of HTSC bulk materials in magnetic bearings requires an understanding and minimization of the friction in such systems. Since the rotors in these bearings are not completely axially symmetric, their rotation generates an ac magnetic field acting on the superconductors and the metallic components of the arrangement.
M. Zeisberger, W. Gawalek
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Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop., 2003
Thyratrons are limited in lifetime and maximum repetition rate. For some applications it is necessary to replace the thyratron by a semiconductor switch. Therefore it is necessary to compress the pulses by nonlinear inductances. In a magnetic pulse compression network three main losses exist.
C. Strowitzki, A. Gortler, M. Baumann
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Thyratrons are limited in lifetime and maximum repetition rate. For some applications it is necessary to replace the thyratron by a semiconductor switch. Therefore it is necessary to compress the pulses by nonlinear inductances. In a magnetic pulse compression network three main losses exist.
C. Strowitzki, A. Gortler, M. Baumann
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Identifying Hysteresis Losses in Magnetic Media
IEEE Transactions on Magnetics, 2010A magnetic medium can have different hysteresis losses when subject to a rotating field. We discuss the pertinent parameters that determine these losses and a method of identifying them. We discuss the effect of particle interaction, and isotropic and anisotropic media.
E. Della Torre +2 more
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Determination of magnetic losses in planar magnetic elements
2008 18th International Conference on Electrical Machines, 2008This paper aims at presenting several parameters for the determination of magnetic losses in planar magnetic devices. All the figures, equations, and graphics presented were obtained by analytical studies, simulations using finite-element analysis, and mainly through the measurements taken on a magnetic device built for this purpose.
C. L. Ebert +2 more
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Nonlinear Modeling of Magnetization Loss in Permanent Magnets
IEEE Transactions on Magnetics, 2012Permanent magnets are commonly used in electromechanical energy conversion devices, especially in permanent magnet synchronous machines (PMSM). When designing such devices, it is necessary to take account for the operating conditions of the permanent magnets.
Radu Fratila +3 more
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1994
The main issues in the research on ac losses in practical superconductors and the developments of the last decade are reviewed. Moreover the impact of the knowledge on the development of superconducting magnet systems as for tokamaks and particle accelerators is discussed.
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The main issues in the research on ac losses in practical superconductors and the developments of the last decade are reviewed. Moreover the impact of the knowledge on the development of superconducting magnet systems as for tokamaks and particle accelerators is discussed.
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Core loss in buried magnet permanent magnet synchronous motors
IEEE Transactions on Energy Conversion, 1989The steady-state core-loss characteristics of buried-magnet synchronous motors operating from a sinusoidal constant frequency voltage supply are investigated. Measured and calculated core loss, with constant shaft load, is shown to increase with decreasing terminal voltage due to an increase in armature reaction-induced stator flux-density time ...
Rich Schiferl, T. A. Lipo
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Magnetic losses and thermal analysis in a magnetic gear for wind turbine
2018 Thirteenth International Conference on Ecological Vehicles and Renewable Energies (EVER), 2018This article deals with the magneto-thermal analysis of a concentric magnetic gear for integration in a 6 MW 12.5 rpm wind turbine. In this drive, heat generated by magnetic losses must be extract by a cooling system in order to maintain an acceptable temperature.
Desvaux, Melaine +6 more
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