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Content Provider | IEEE Xplore Digital Library |
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Author | Gyselinck, J. Robert, F. |
Copyright Year | 2005 |
Description | Author affiliation: Dpt. of Electr. Eng., Univ. Libre de Bruxelles, Brussels (Gyselinck, J.) |
Abstract | This paper deals with novel homogenization methods for the inclusion of skin and proximity effect in windings in finite-element (FE) models of electromagnetic devices. A general frequency-domain approach and its original extension to the time domain are proposed. In a preprocessing step the conductors (i.e. type of cross-section and packing, and fill factor) are characterized in the frequency domain by means of a reduced FE model, producing six dimensionless and frequency-dependent skin- and proximity-effect coefficients. The latter coefficients are readily taken into account in a frequency-domain FE analysis of a complete device. A time-domain FE analysis with homogenized winding requires the introduction of additional unknowns and equations; this extension to the time domain is analogous to the approximation of a frequency-dependent inductive impedance by a ladder circuit consisting of constant resistances and inductances. By way of illustration and validation, the homogenization methods are applied to a 2D FE model of an inductor. For the winding, different types of wire cross-section and packing, viz round/hexagonal and rectangular/rectangular, are considered. A precise reference solution is obtained with a FE model in which all wires are finely discretized. An excellent agreement is achieved while reducing the computation time considerably |
File Size | 1335891 |
File Format | |
ISBN | 9075815093 |
DOI | 10.1109/EPE.2005.219574 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2005-09-11 |
Publisher Place | Germany |
Access Restriction | Subscribed |
Rights Holder | EPE Association |
Subject Keyword | Device modelling Transformer Passive components Time domain analysis Proximity effect Conductors Iron Finite element methods Frequency domain analysis Equations Electromagnetic devices Simulation Electromagnetic modeling Skin |
Content Type | Text |
Resource Type | Article |
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