Fully superconducting rectifiers and fluxpumps Part 1: Realized methods for pumping flux
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TLDR
In the past twenty years, a large variety of mechanically or electrically driven devices have been proposed and successfully operated and the basic principle of operation of each class of devices is shown and specific material problems and limitations are reported as mentioned in this paper.About:
This article is published in Cryogenics.The article was published on 1981-04-01 and is currently open access. It has received 131 citations till now. The article focuses on the topics: Rectifier.read more
Citations
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Journal ArticleDOI
Dynamic resistance of a high-Tc superconducting flux pump
TL;DR: In this article, a mechanically rotating superconducting flux pump was used to excite an HTS double pancake coil at 77 K. This flux pump is found to possess an effective internal resistance, Reff, which varies linearly with frequency, and is two orders of magnitude larger than the measured series resistance of the soldered contacts within the circuit.
Journal ArticleDOI
Flux Pump for HTS Magnets
C Hoffmann,D Pooke,A.D. Caplin +2 more
TL;DR: In this paper, a flux pump based on 2G HTS wire is presented, which can achieve a critical current of 49 A within 112 seconds, which is a state-of-the-art performance for superconducting devices.
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Mechanism of a high-Tc superconducting flux pump: Using alternating magnetic field to trigger flux flow
Jianzhao Geng,Tim Coombs +1 more
TL;DR: In this article, the authors proposed a flux pumping mechanism for high-tc superconducting (HTS) coils with an experimental verification and an analytical model, where the basic principle is that flux flow can be triggered when the superconductor carrying a direct current is subjected to a perpendicular AC magnetic field.
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Development of a brushless HTS exciter for a 10 kW HTS synchronous generator
Chris W. Bumby,Rodney A. Badcock,Hae-Jin Sung,Kwangmin Kim,Zhenan Jiang,A. E. Pantoja,Patrick Bernardo,Patrick Bernardo,Minwon Park,R. G. Buckley +9 more
TL;DR: In this article, a brushless HTS-PM exciter is proposed to inject a superconducting DC current into the rotor coil circuit, which can significantly alter the thermal load upon the cryogenic system by removing the need for thermally inefficient normalconducting current leads.
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Impact of flux gap upon dynamic resistance of a rotating HTS flux pump
TL;DR: In this article, the effect of varying the size of the flux gap between the rotor magnets and coated conductor stator from 1 to 7.5 mm was investigated and it was shown that the performance of an experimental mechanically rotating HTS flux pump ceases to maintain a measurable output at flux gaps above 7.
References
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Characteristics and a New Application of High‐Field Superconductors
Paul S Swartz,Carl H Rosner +1 more
TL;DR: In this article, a simple physical and mathematical model and experimental support of the manner in which magnetic flux penetrates into a high-field superconductor is presented, based on this model a new device using highfield superconductors in their bulk form called a superconducting magnetic flux compressor is proposed.
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A dynamo for generating a persistent current in a superconducting circuit
J. Volger,P.S. Admiraal +1 more
TL;DR: In this article, the magnetic flux to be conserved in a multiply connected superconductor is a multi-valued function, the moduli being the magnet fluxes per hole and the possible consequences of this property for triply connected or more complicated bodies are examined.
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Flux pumps and superconducting solenoids
H. van Beelen,Miss A.J.P.T. Arnold,H.A. Sypkens,J.P. Van Braam Houckgeest,R. de Bruyn Ouboter,J.J.M. Beenakker,K.W. Taconis +6 more
TL;DR: A review of the various types of flux pumps and current generators which have been developed so far in several laboratories is given in this article, where experiments carried out with wire-and foil-solenoids, fed by the flux pump developed in the Kamerligh Onnes Laboratory, are discussed.