Coupling Coefficient Measurement Method with Simple Procedures Using a Two-Port Network Analyzer for a Multi-Coil WPT System

Energies

Seon-Jae Jeon¹  Dong-Wook Seo¹ 

[1] Department of Radio Communication Engineering, Korea Maritime and Ocean University (KMOU), 727 Taejong-ro, Yeongdo-gu, Busan 49112, Korea;

关键词: coupling coefficient;    impedance matrix;    multiple coils;    mutual inductance;    scattering matrix;    transfer impedance;    wireless power transfer;   

DOI  :  10.3390/en12203950

来源: DOAJ

【 摘 要 】

In this paper, we propose a measurement method with a simple procedure based on the definition of the impedance parameter using a two-port network analyzer. The main advantage of the proposed measurement method is that there is no limit on the number of measuring coils, and the method has a simple measurement procedure. To verify the proposed method, we measured the coupling coefficient among three coils with respect to the distance between the two farthest coils at 6.78 and 13.56 MHz, which are frequencies most common for a wireless power transfer (WPT) system in high-frequency band. As a result, the proposed method showed good agreement with results of the conventional S-parameter measurement methods.

【 授权许可】

Unknown