NDLI: Sources of Error in AC Losses Measurement Using V-I Method

Content Provider	IEEE Xplore Digital Library
Author	Stafiniak, A. Kosobudzki, G.
Copyright Year	2002
Abstract	A significant cryogenic load is generated in rapidly-cycling superconducting magnets due to ac losses. This load should not be excessive, otherwise cryogenic system will not be able to evacuate heat and magnet will quench. To verify magnet design and to know real cryogenic load the test of ac losses has to be performed. Electrical and calorimetric methods can be used for this purpose. The calorimetric method is slower because it requires stabilization of cryogenic system. The electrical method called V-I is faster and it can be applied to any magnet independent of its cooling schemes. With this method ac losses are measured directly and results are provided on-line. However, the electrical method is considered more error prone, mainly due to the fact that power factor of superconducting magnets is close to zero.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3110
Ending Page	3114
Page Count	5
File Size	408830
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Loss measurement Superconducting magnets Magnetic separation Magnetic flux Cryogenics Voltage Superconducting device noise Noise measurement Cooling Power measurement AC loss measurement
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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