Effect of eddy losses on the design and modelling of air-cored reactors

The authors introduce a proximity impedance matrix which can be added to the original impedance matrix of an air-cored reactor to account for proximity effects. This matrix may be added to the standard impedance matrix of the reactor to take into account the effect of eddy losses on the current dist...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1991-11, Vol.27 (6), p.5001-5003
Main Authors: Burke, P.E., Fawzi, T.H.
Format: Article
Language:English
Subjects:
Applied sciences
Circuits
Electrical engineering. Electrical power engineering
Exact sciences and technology
Frequency
Impedance
Inductors
Power system modeling
Power system transients
Proximity effect
Skin
Steady-state
Transformers and inductors
Transmission line matrix methods
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Summary:The authors introduce a proximity impedance matrix which can be added to the original impedance matrix of an air-cored reactor to account for proximity effects. This matrix may be added to the standard impedance matrix of the reactor to take into account the effect of eddy losses on the current distribution among the parallel layers of the reactor. Partial proximity matrices are also introduced, which may be used to find the distribution of active power loss among the layers, which is necessary to predict the temperature rises of the layers. The derivation of the proximity impedance matrix and the underlying assumptions are discussed. Results obtained for a typical reactor are presented.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.278720