Abstract
A wireless power transfer (WPT) system suffers from eddy loss if a conductive object is placed near the coupling coil. In this paper, a 3-coil equivalent circuit model for the coupling coil in a WPT system is proposed for analyzing the eddy loss due to nearby conductors. This model uses a third coil with inductive coupling to the original transmitting and receiving coils to model the eddy loss. The proposed model was validated by comparing the Z-parameters with a full-wave simulation and showing good correlation over the frequency of interest, where the traditional 2-coil model fails. The 3-coil model is compared with the Steinmetz equivalent circuit model and shows better accuracy in terms of efficiency simulation. This proposed model can be used in efficiency analysis and design optimization of a WPT system.
Recommended Citation
H. Zhang and D. G. Beetner, "An Equivalent Coil Model of a Wireless Power Transfer System Including Eddy Loss," IEEE International Symposium on Electromagnetic Compatibility, pp. 544 - 549, Institute of Electrical and Electronics Engineers, Jan 2024.
The definitive version is available at https://doi.org/10.1109/EMCSIPI49824.2024.10705641
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Eddy loss; equivalent circuit model; wireless power transfer
International Standard Serial Number (ISSN)
2158-1118; 1077-4076
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Jan 2024
