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HTS Transformer–Rectifier Flux Pump Optimization
IEEE Transactions on Applied Superconductivity, 2019Flux pumps are a type of wireless superconducting power supply which can provide advantages over traditional superconducting systems. This work reports on time-domain circuit simulations in LTspice of a transformer-rectifier flux pump. The simulations are compared with an experimental system employing ac-field switches and show good agreement.
Jamie Gawith +5 more
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Development of HTS transformers
2008 IEEE International Conference on Industrial Technology, 2008With the improvement of high temperature superconductor (HTS) practical performance, research and development with regard to practical applications of HTS transformers have been progressed actively in the world. The current focus on the applied superconducting technology for HTS transformers has been moving to the industrial preparations from the ...
null Jianxun Jin, null Xiaoyuan Chen
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Considerations about HTS superconducting transformers
IEEE Transactions on Appiled Superconductivity, 2001A superconducting transformer brings savings in weight, loss and to a lesser degree, in volume. A transformer uses a magnetic circuit in order to decrease the no-load current. The magnetic circuit can operate either at the same temperature than the superconducting windings or at room temperature.
G. Donnier-Valentin +2 more
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Performance Evaluation for a HTS Transformer
IEEE Transactions on Applied Superconductivity, 2006The adoption of High Temperature Superconductors (HTS) tapes is becoming a suitable and interesting alternative to copper for windings in transformers, thanks to the improvement in performance and the lowering of costs. Of course, optimized designs, different with respect to usual layouts, must be considered, due to the additional requirements of HTS ...
FORMISANO, Alessandro +6 more
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Detection of quench in HTS transformer windings
Physica C: Superconductivity and its Applications, 2007Abstract HTS winding for power applications have been developed by improving HTS wire performance. A critical current of HTS winding is determined by a standard criterion of 1 μV/cm In DC operation. Determining a critical current of the HTS winding is more complicated in AC operation.
Y. Hwang +4 more
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Cryostat Design for an HTS Transformer
AIP Conference Proceedings, 2004A single‐phase 41‐kVA 2050V / 410V single‐phase transformer demonstrator has been designed and manufactured as an integrated complete device with cooling system. A cold magnetic circuit design has been chosen for overall structural simplicity in a single metallic cryostat. The superconducting coils are solenoids.
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Instrumental Needs For Hadamard Transform Spectrometry (HTS)
SPIE Proceedings, 1989Hadamard transform spectrometry utilizes a spatial transform, described by Hadamard mathematics,' in order to gaina multiplex advantage similar to that seen in Fouier transform techniques. A Hadamard instrument can be thought ofto consist of five components: 1) optical separator (usually a grating), 2) Hadamard encoding mask, 3) post collectionoptics ...
Jeffrey S. White +2 more
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HTS SQUID magnetometers with intermediate flux transformers
IEEE Transactions on Appiled Superconductivity, 1997We have modeled and fabricated a novel HTS magnetometer with a d.c. SQUID which couples to an on-chip flux transformer via an intermediate flux transformer. This configuration allows high efficiency coupling between a 65 mm/sup 2/, 28 nH pickup loop and a low inductance (
M.N. Keene +5 more
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Technology Optimizations for Giaever Transformer Based on HTS Heterostructure
IEEE Transactions on Applied Superconductivity, 2007In this paper, we present several steps in the development of an HTS Giaever transformer, based on a SIS heterostructure, where both superconducting thin film should present low pinning properties and be insulated with a thin insulating layer. High Resolution AC Susceptibility measurements on YBCO//STO and NBCO//STO thin films show that the most ...
Contour, J.-P. +6 more
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IEEE Transactions on Applied Superconductivity, 2008
In order to realize HTS power devices with high performances, it is important to evaluate the characteristics of HTS conductors theoretically and experimentally. In the experimental evaluation, an ac power supply with a large current capacity and few ripples is necessary.
S. Kawabata +3 more
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In order to realize HTS power devices with high performances, it is important to evaluate the characteristics of HTS conductors theoretically and experimentally. In the experimental evaluation, an ac power supply with a large current capacity and few ripples is necessary.
S. Kawabata +3 more
openaire +1 more source