Virtual Air Gap Length Computation With the Finite-Element Method

Virtual Air Gap Length Computation With the Finite-Element Method

Virtual air gaps are created in a transformer core by a change in core permeability in the vicinity of auxiliary windings carrying dc current. A procedure for equivalent air gap length computation is established by performing finite-element analysis to obtain the change in transformer core reluctanc...

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Veröffentlicht in:IEEE transactions on magnetics 2007-04, Vol.43 (4), p.1829-1832
Hauptverfasser: Konrad, A., Brudny, J.F.
Format: Artikel
Sprache:eng
Schlagworte:
Air gap
Circuit faults
Coils (windings)
Computation
Cross-disciplinary physics: materials science
rheology
Direct current
Equivalence
Exact sciences and technology
Finite element method
Finite element methods
Geometry
Iron
Magnetic analysis
Magnetic cores
magnetic devices
Magnetic materials
Magnetism
Materials science
Mathematical analysis
Other topics in materials science
Permeability
Physics
Reluctance
Solid modeling
Transformer cores
Transformers
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Beschreibung
Zusammenfassung:Virtual air gaps are created in a transformer core by a change in core permeability in the vicinity of auxiliary windings carrying dc current. A procedure for equivalent air gap length computation is established by performing finite-element analysis to obtain the change in transformer core reluctance. Results obtained from the finite-element analysis are compared with experimental and analytical results available in the literature
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2007.892615