High-frequency modelling of coils by integral formulations

• Sándor Bilicz ^[1]
  1. [1] Budapest University of Technology and Economics

     Budapest University of Technology and Economics

     Hungría

     
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 34, Nº 5 (Special Issue: IGTE 2014), 2015, págs. 1447-1459
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • 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.