NDLI: Development of a Compact Measurement System of Transport Characteristics in HTS Conductors by Using an HTS Current

Content Provider	IEEE Xplore Digital Library
Author	Kawabata, S. Hirayama, T. Maehara, K. Kirihara, Y.
Copyright Year	2002
Abstract	In order to realize HTS power machines and devices with high performance, it is important to evaluate the characteristics of HTS conductors quantitatively. We developed a compact system to measure the transport characteristics of HTS conductors under various experimental conditions. This system enables us to measure the transport characteristics of straight HTS conductors up to a current capacity of 1 kA class at 77 K, 66 K, and 4.2 K. The measurement of transport current losses is done by the Poynting vector method. The distribution of Poynting vectors around the sample conductor can be obtained by using many sets of both potential leads and pickup coils. An HTS current transformer (HTS-CT) is used to feed current to the sample conductor for the measurement. A secondary current of about 1 kA at 77 K can be induced when the primary current is 40 A. The sample conductor is connected to the secondary coil of this transformer. As a sample conductor, we used a conductor consisting of 16 parallel Ag-sheathed Bi-2223 multifilamentary tapes. The joint method between the HTS-CT and sample conductors is also examined. Based on these results, the usefulness of this measurement system is discussed.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3377
Ending Page	3380
Page Count	4
File Size	740002
File Format	PDF
ISSN	10518223
Volume Number	21
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Conductors Current measurement Loss measurement High temperature superconductors Joints Coils Temperature measurement transport current loss Bi-2223 tape HTS conductor superconducting current transformer
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Development of a Compact HTS Current Transformer for Evaluating the Characteristics of HTS Conductors

Measurement of Transport Current Losses in HTS Conductors With Large Current Capacity by Using HTS Current Transformer

Measurement of Transport Characteristics in HTS Conductors With Large Current Capacity by Using an HTS Current Transformer

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