High-frequency modelling of coils by integral formulations. Issue 5 (7th September 2015)

• Record Type: Journal Article
• Authors: Bilicz, Sándor
• Editors: Oszkár Bíró, Professor David A. Lowther and Dr Piergiorgio Alotto, Professor
• Is Part Of: Compel. Volume 34:Issue 5(2015)
• Page Start: 1447
• Page End: 1459
• Publication Date: 2015-09-07
• Subjects: Electromagnetism -- High frequency -- Integral equations -- Circuit elements -- Coil resonance -- Full-wave -- Integral formulation; Electrical engineering -- Data Processing -- Periodicals; Electrical engineering -- Mathematics -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Data Processing -- Periodicals; Electronics -- Mathematics -- Periodicals; 621.3
• DOI: 10.1108/COMPEL-02-2015-0042
• Languages: English
• ISSNs: 0332-1649

Abstract

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.