Results 171 to 180 of about 696 (211)
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Operational characteristics of a flux pump
IEEE Transactions on Magnetics, 1979The mechanism of switching that is taking place in a moving flux spot in a superconducting foil has been investigated in details. The structure of the current, temperature and magnetic field in the leading edge of the spot has been derived theoretically. The resulting distributions for these field variables have then been used to estimate the effective
O. Mawardi, A. Gattozzi, H. Chung
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Experimental model of a flux pump
Cryogenics, 1989Abstract An experimental model of a flux pump for a special superconducting Nb-alloy foil is described. The design features of the principal units are considered and the test results are presented. The flux pump provides a maximum current of 4100 A and a ·frozen’ current of 3800 A in the superconducting foil.
V.V. Vasiliev +12 more
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Dynamics of High-Flux Capillary Pump
LangmuirThe structure and arrangement of the micropillar array in the micropillar capillary pump have a significant influence on its flow resistance and flow rate. Therefore, research and prediction of the conveying performance can provide valuable guidance for the design of the capillary pump.
Huan Yan +9 more
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A thermally actuated superconducting flux pump
Physica C: Superconductivity, 2008Abstract The concept of a superconducting flux pump is relatively straightforward. A small magnetic field repeatedly applied will lead to a much larger field being trapped within the superconductor. This field is limited by the volume of the superconductor and by its critical current but not by the excitation field.
Timothy Coombs +2 more
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A circuit analysis of a flux pump
Superconductor Science and Technology, 2019Abstract Flux pumps have been investigated for a number of years as a means of powering large magnets. In this paper a simple system consisting of one, or two, loops under a moving magnet is analysed theoretically. It is a circuit model using only Faraday’s law of induction and the V
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Flux pumping, fluctuations and climbing fields
Superconductor Science and Technology, 2012This paper describes the behaviour of bulk superconductors when subjected to a varying magnetic field. A magnetic model is described together with experimental results which explain and describe the behaviour of superconducting bulks when subjected to varying magnetic fields.
T A Coombs +3 more
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Flux pump excited brushless alternator
IEEE Transactions on Magnetics, 1981Experimental measurements obtained for a novel brushless superconducting alternator that makes use of a flux pump of the rotating spot type are presented. The flux pump, used to provide the excitation current of the field coils incorporates several features of a machine studied theoretically and reported in an earlier paper.
A. Ferendeci +3 more
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Intravaginal Flux Controlled Pump for Sustained Release of Macromolecules
Pharmaceutical Research, 2014To design a flux controlled pump (FCP) capable of 30-day, controlled release of macromolecules to the vaginal mucosa.The FCP is composed of a single chamber fabricated from a rigid thermoplastic with orifices and encloses a pellet of water-swellable polymer containing the drug substance. We performed testing both in vitro and in rabbits.
Ryan S, Teller +5 more
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IEEE Transactions on Nuclear Science, 1971
Many superconducting devices now being built require currents of a thousand or more amperes. When the currents needed are dc and large compared with the heat leakage into the cryostat from sources other than the electrical leads, it may be advantageous to use a flux pump or ac-to-dc converter within the dewar for powering the device.
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Many superconducting devices now being built require currents of a thousand or more amperes. When the currents needed are dc and large compared with the heat leakage into the cryostat from sources other than the electrical leads, it may be advantageous to use a flux pump or ac-to-dc converter within the dewar for powering the device.
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New Generation of Superconductive Flux Pumps
1990High-current, small-size superconductive flux pumps have been developed. The armature windings of these flux pumps are made of high-field type II hard superconductors. Currents of 6.8 kA have been reached in a flux pump weighing about 6 kg. Further, prototype high-temperature superconductive flux pumps using Y-Ba-Cu-0 ceramics have been developed.
I. A. Glebov +2 more
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