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Magnetochemistry
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Magnetically Coupled Wireless Power Transfer System
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Magnetically Coupled Wireless Power Transfer System

A special issue of Magnetochemistry (ISSN 2312-7481). This special issue belongs to the section "Magnetic Materials".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 5698
Related Special Issue in Applied Sciences: Magnetically Coupled Wireless Power Transfer System

Special Issue Editor

Prof. Dr. Panbo Liu

E-Mail Website
Guest Editor
School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an, China
Interests: carbon composites; porous structure; dielectric properties; magnetic particles; microwave absorption
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Currently, wireless power transfer (WPT), due to the advantages of contactless connection between power source and load, has been extensively studied in various utilizations, such as charging for electric vehicles, medical implants system and underwater wireless power transfer. However, the efficiency and reliability of WPT can be greatly affected by the external environment, which restricts the wide use of the technology. Especially when the system is close to lossy medium, the efficiency of power transmission will be a complex function of dielectric conductivity, dielectric constant and system parameters. With the aim to solve the above problem, many researches focus on analysis of propagation characteristics of electromagnetic wave in lossy medium, designing a novel system topology, studying electromagnetic metamaterials and intelligent control methods.

This Special Issue will attempt to cover the recent advances in analysis and rational design of magnetically coupled wireless power transfer systems, concerning the design and use of new materials, the analysis of electromagnetic wave propagation characteristics in lossy medium, the design of power transmission topology and methods to improve the efficiency and reliability of the system.

You may choose our Joint Special Issue in Applied Sciences.

Prof. Dr. Panbo Liu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Magnetochemistry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • wireless power transfer
  • magnetic coupling
  • electromagnetic field
  • lossy medium
  • electromagnetic metamaterials

Published Papers (2 papers)

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Research

13 pages, 2744 KiB  
Article
Optimization of Transfer Quality Factor of Limited-Size Coils for Series-Series Compensated Inductive Power Transfer System
by Peizhou Liu, Tiande Gao and Zhaoyong Mao
Magnetochemistry 2022, 8(3), 30; https://doi.org/10.3390/magnetochemistry8030030 - 6 Mar 2022
Cited by 4 | Viewed by 2810
Abstract
For an inductive power transfer system, high transfer quality factor means that the system can obtain large theoretical transmission efficiency. In this paper, a method of coil optimization in a limited space to improve the transfer quality factor for a series-series compensated inductive [...] Read more.
For an inductive power transfer system, high transfer quality factor means that the system can obtain large theoretical transmission efficiency. In this paper, a method of coil optimization in a limited space to improve the transfer quality factor for a series-series compensated inductive power transfer system is presented. High transfer quality factor in a limited space can be achieved by determining the optimal number of turns with equal turn spacing coil, and then optimizing the distance between adjacent turn. The results of finite element simulation and experimental measurement show that the method proposed in this paper can obtain a higher transfer quality factor than the conventional method of winding coil with equal turn spacing. The method proposed in this paper can be used to guide the optimal design of coils in a limited space. Full article
(This article belongs to the Special Issue Magnetically Coupled Wireless Power Transfer System)
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14 pages, 1672 KiB  
Article
Analysis of the Mutual Impedance of Coils Immersed in Water
by Peizhou Liu, Tiande Gao and Zhaoyong Mao
Magnetochemistry 2021, 7(8), 113; https://doi.org/10.3390/magnetochemistry7080113 - 5 Aug 2021
Cited by 5 | Viewed by 2215
Abstract
Magnetic induction communication and wireless power transmission based on magnetic coupling have significant application prospects in underwater environments. Mutual impedance is a key parameter particularly required for the design of the systems. However, mutual impedance is usually extracted from measurements when the coils [...] Read more.
Magnetic induction communication and wireless power transmission based on magnetic coupling have significant application prospects in underwater environments. Mutual impedance is a key parameter particularly required for the design of the systems. However, mutual impedance is usually extracted from measurements when the coils are processed, which is obviously not conducive to the system optimization in the design phase. In this paper, a model of the mutual impedance of coils immersed in water is established. The magnetic vector potential is expressed in the form of series by artificially setting a boundary, and then the mutual impedance calculation formula of the coils immersed in water is derived. In the analysis, the effect of the conductivity of water, the excitation frequency, and the number of turns of the coils are mainly taken into account. In addition, the variation of the mutual impedance of coils in air and water with axial displacement is also compared. The models can be used to analyze the coil coupling characteristics in the presence of conductive medium, which is helpful for the design process. Full article
(This article belongs to the Special Issue Magnetically Coupled Wireless Power Transfer System)
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