High-frequency modelling of coils by integral formulations
ISSN: 0332-1649
Article publication date: 7 September 2015
Abstract
Purpose
The purpose of this paper is to discuss a numerically efficient simulation method for the study of the high-frequency behaviour of air-cored coils. The self-resonance phenomenon of coils can be studied which is important, e.g., in wireless power transfer (WPT).
Design/methodology/approach
A full-wave and a quasi-stationary integral formulation is introduced. The integral equation is solved by using the Method of Moments. The complex impedance of the coil is calculated and studied in a wide frequency band.
Findings
The integral equation method is numerically efficient compared to finite element schemes, making possible its use in design optimisation problems.
Research limitations/implications
The present model can treat homogeneous media only. Future research will focus on the extension of the approach to heterogeneous media.
Practical implications
The method can be used in the design optimisation of WPT systems that apply magnetically coupled resonant coils.
Originality/value
The presented computation scheme is original. Integral equation schemes have not been used for coil modelling before, to the best of the author’s knowledge.
Keywords
Acknowledgements
This research is supported by the Hungarian Science Research Fund (OTKA Grant Nos K-105996 and K-111987).
Citation
Bilicz, S. (2015), "High-frequency modelling of coils by integral formulations", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 34 No. 5, pp. 1447-1459. https://doi.org/10.1108/COMPEL-02-2015-0042
Publisher
:Emerald Group Publishing Limited
Copyright © 2015, Emerald Group Publishing Limited