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Electronics
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Design and Applications of Wireless Power Charging Systems
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Design and Applications of Wireless Power Charging Systems

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Power Electronics".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 4088

Special Issue Editors

Dr. Janis Zakis

E-Mail Website
Guest Editor
Institute of Industrial Electronics and Electrical Engineering, Riga Technical University, 1048 Riga, Latvia
Interests: power electronics; energy conversion; renewable energy systems; distributed power generation; wireless power transfer
Special Issues, Collections and Topics in MDPI journals
Dr. Deniss Stepins

E-Mail Website
Guest Editor
Institute of Industrial Electronics and Electrical Engineering, Riga Technical University, 1658 Riga, Latvia
Interests: power electronics; electromagnetic interference; electromagnetic compatibility; wireless power transfer
Special Issues, Collections and Topics in MDPI journals
Dr. Alon Kuperman

E-Mail Website1 Website2
Guest Editor
Applied Energy Laboratory, School of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
Interests: photovoltaics; power electronics; energy; renewable energy; power generation; energy conversion; distributed generation; energy engineering; power converters; power quality; wireless power transfer
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Since humans increasingly rely on electronic and electrical devices equipped with rechargeable batteries, the reliable and convenient charging of the batteries has gained a widespread research interest. Wireless charging can provide both a high reliability and convenience regarding the charging process because it does not cause sparking or short circuits, and the precise positioning of a receiving device is not necessary. Wireless charging can offer one more additional feature—dynamic power transfer that can charge the batteries of objects (e.g., electric vehicles) while moving. 

This Special Issue focuses on original research papers regarding the design and application of high-efficiency, inductive and capacitive charging systems. Review articles on the design and applications of wireless charging systems are also welcome. Potential research topics include, but are not limited to:

  • The modeling and design of high-efficiency and high-power, density-inductive and capacitive wireless charging systems;
  • Applications of wireless charging systems;
  • The dynamic wireless charging of electrical vehicle batteries;
  • Design issues with wireless chargers operating in the MHz range.

Dr. Janis Zakis
Dr. Deniss Stepins
Prof. Dr. Alon Kuperman
Guest Editors

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. Electronics is an international peer-reviewed open access semimonthly 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 2400 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

  • inductive power transfer
  • capacitive power transfer
  • battery charging
  • EMC in wireless power transfer
  • advanced semiconductors (SiC and GaN)
  • analysis, modeling, simulation, control, and applications of wireless power charging systems

Published Papers (3 papers)

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Research

17 pages, 7278 KiB  
Article
Power Injection and Free Resonance Decoupled Wireless Power Transfer System with Double-Switch
by Wei Wu, Daqing Luo, Zhe Tang, Jianfeng Hong and Junjie Yang
Electronics 2023, 12(19), 4061; https://doi.org/10.3390/electronics12194061 - 27 Sep 2023
Viewed by 557
Abstract
This article presents a type of power injection and free resonance decoupled wireless power transfer (WPT) system, the double-switch independent power injection and free resonance wireless power transfer (IPIFR-WPT) system working in CCM. Based on the stroboscopic mapping model, the theoretical results show [...] Read more.
This article presents a type of power injection and free resonance decoupled wireless power transfer (WPT) system, the double-switch independent power injection and free resonance wireless power transfer (IPIFR-WPT) system working in CCM. Based on the stroboscopic mapping model, the theoretical results show that the operation point of the proposed WPT system is determined by itself instead of the switching control strategy. Specifically, once the voltage on the primary capacitance does not decrease to the input voltage in the free-resonance process, the diode in series would not turn on and the system would not switch to the power injection process. Therefore, there is a wide soft-switching margin to ensure the system operating in soft-switching states. Another characteristic of the proposed WPT system is the monotonicity between output power and operation cycle, which presents a simple power control method. And since the soft-switching margin may have intersection under dynamic coupling coefficient, the proposed system maintains soft-switching states with a fixed switching strategy and presents advantage to resist the dynamic change of coupling coefficient. All the characteristics of the proposed WPT system mentioned above have been verified in both theory and experiment. Full article
(This article belongs to the Special Issue Design and Applications of Wireless Power Charging Systems)
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12 pages, 5295 KiB  
Article
Efficiency Improvement for Wireless Power Transfer System via a Nonlinear Resistance Matching Network
by Haonan Yang, Chengming Wu and Tie Chen
Electronics 2023, 12(6), 1341; https://doi.org/10.3390/electronics12061341 - 12 Mar 2023
Cited by 1 | Viewed by 1537
Abstract
The primary control is widely adopted to obtain a constant voltage output under a wider load range. However, for traditional full-bridge inverters under phase-shift control, due to the loss of soft switching, the system transmission efficiency will decrease rapidly. This problem can be [...] Read more.
The primary control is widely adopted to obtain a constant voltage output under a wider load range. However, for traditional full-bridge inverters under phase-shift control, due to the loss of soft switching, the system transmission efficiency will decrease rapidly. This problem can be improved by using a half-bridge inverter; however, the power transferred to receiving devices utilizing a half-bridge inverter is inadequate under a small dc load value. To solve these urge issues, a resistance matching network (RMN), constructed by a resonant inductor and capacitor, is added before the full bridge rectifier part of this paper. Owing to the nonlinear resistance conversion characteristics of the proposed RMN structure, the variation range of the equivalent AC impedance before the rectifier end can be compressed into an optimum range to enhance the poor transmission efficiency during the coils part. Simultaneously, when the DC load is small, the power capability of the whole system can be enhanced by increasing the equivalent ac load value; as a result, the insufficient power capability of the half-bridge inverter can be relieved. Finally, a 36 V output WPT system based on the proposed RMN and phase shift control is constructed. Additionally, the experimental results prove the feasibility of the theoretical analysis results. Full article
(This article belongs to the Special Issue Design and Applications of Wireless Power Charging Systems)
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23 pages, 5692 KiB  
Article
A Real-Time Maximum Efficiency Tracker for Wireless Power Transfer Systems with Cross-Coupling
by Arpan Laha, Abirami Kalathy, Majid Pahlevani and Praveen Jain
Electronics 2022, 11(23), 3928; https://doi.org/10.3390/electronics11233928 - 28 Nov 2022
Cited by 1 | Viewed by 1377
Abstract
This article proposes a real-time dynamic maximum efficiency tracking algorithm for wireless power transfer (WPT) systems with multiple receivers. The algorithm sequentially varies the net reactance of each of the receivers using switched capacitor circuits (SCCs) to reach the maximum efficiency point (MEP). [...] Read more.
This article proposes a real-time dynamic maximum efficiency tracking algorithm for wireless power transfer (WPT) systems with multiple receivers. The algorithm sequentially varies the net reactance of each of the receivers using switched capacitor circuits (SCCs) to reach the maximum efficiency point (MEP). The MEP in multiple-receiver systems varies in the presence of cross-coupling. This article provides an in-depth analysis of the effects of cross-coupling and proves that cross-coupling could be beneficial or detrimental to efficiency, depending on circuit conditions such as the load resistances and coupling factors among the coils. Hence, unlike previous research, this article emphasizes the improvement of the link efficiency in the presence of cross-coupling rather than the complete elimination of its effects. Experimental results have been included for a single-transmitter and two-receiver system to validate the feasibility of the proposed algorithm. Full article
(This article belongs to the Special Issue Design and Applications of Wireless Power Charging Systems)
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