NDLI: Optimisation analysis of coil configuration and circuit model for asymmetric wireless power transfer system

Content Provider	IET Digital Library
Author	Wang, Shengming Hu, Zhaoyang Rong, Cancan Lu, Conghui Tao, Xiong Chen, Junfeng Liu, Minghai
Abstract	The authors present a new asymmetric structure using an optimisable coil configuration and circuit model to eliminate frequency splitting and increase high-efficiency transfer distance in wireless power transfer (WPT) via magnetic resonance coupling. A pair of non-identical coils is proved theoretically and optimised to limit the coupling coefficient. The series–shunt mixed-resonant circuit structure is adopted to promote the performance of WPT system. The advantages and characteristics of the asymmetric system using mixed-resonant circuit structure based on appropriate non-identical coils are depicted by numerical calculation and simulation. Moreover, the WPT system is finally set up to verify the theory prediction. All the calculated and experimental results show that frequency splitting is suppressed in close distance effectively. Moreover, the high-efficiency transfer distance is proved to exceed the triple diameter of receiving coil. Therefore, a relatively high-efficiency and long-distance WPT system, which can be a good candidate for charging portable electronics, is obtained by selecting suitable circuit parameters and appropriate non-identical coils.
Starting Page	1132
Ending Page	1139
Page Count	8
ISSN	17518725
Volume Number	12
e-ISSN	17518733
Issue Number	Issue 7, Jun (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/12/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2017.0539
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2018-01-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Appropriate Nonidentical Coils Asymmetric WPT System Charging Portable Electronics Circuit Model Circuit Parameter Coil Configuration Coils Coupling Coefficient Electromagnetic Induction Frequency Splitting High-efficiency Transfer Distance High-efficiency WPT System Inductive Power Transmission Inductors And Transformer Long-distance WPT System Magnetic Resonance Coupling Mixed-resonant Circuit Structure Nonidentical Coils Numerical Calculation Optimisation Optimisation Analysis Optimisation Technique Receiving Coil Diameter Series-shunt Mixed-resonant Circuit Structure Wireless Power Transfer System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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