Transient shielding effect of slitted electrothermal shield of superconducting generator

An electrothermal shield with direct axis directional slits is proposed for application to a superconducting alternator with quick-response excitation system. Using the finite element method combined with external circuit equations, short-circuit characteristics due to slitting effects are investiga...

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Bibliographic Details
Published inIEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 28; no. 1; pp. 295 - 298
Main Authors Hahn, S.C., Cha, G.S., Lee, H.B., Bae, D.J., Kim, S.W., Hahn, S.Y., Won, Y.J.
Format Journal Article Conference Proceeding
LanguageEnglish
Published United States IEEE 01.01.1992
Subjects
240302 > Power Transmission Lines & Cables > Superconducting Cables > (1990-)
240500 > Power Transmission & Distribution > Environmental Aspects > (1990-)
665411 > Basic Superconductivity Studies > (1992-)
Alternators
Circuit faults
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL CURRENT
CURRENTS
Damping
Eddy currents
ELECTRIC CURRENTS
ELECTRIC GENERATORS
ELECTRICAL INSULATION
Electrothermal effects
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EXCITATION
FINITE ELEMENT METHOD
FLUX DENSITY
Magnetic analysis
MAGNETIC FIELDS
MAGNETIC SHIELDING
NUMERICAL SOLUTION
POWER TRANSMISSION AND DISTRIBUTION
SHIELDING
SHIELDS
Shock absorbers
Stability
SUPERCONDUCTING COILS
SUPERCONDUCTING DEVICES 665412 > Superconducting Devices > (1992-)
SUPERCONDUCTING GENERATORS
Thermal conductivity
THERMAL SHIELDS
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Summary:An electrothermal shield with direct axis directional slits is proposed for application to a superconducting alternator with quick-response excitation system. Using the finite element method combined with external circuit equations, short-circuit characteristics due to slitting effects are investigated by comparing three cases, conventional electrothermal shield (CES), slitted electrothermal shield (SES), and no electrothermal shield (NES) models, under three phase fault and line to line fault, respectively. The field current variations, flux densities in the vicinity of superconducting field winding, and the eddy currents of the SES model are computed and then compared with those of the CES and NES models. It is expected that the superconducting alternators with SES could adopt the quick-response excitation system.< >
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
CONF-910662--
None
ISSN:0018-9464
1941-0069
DOI:10.1109/20.119869