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Advanced Wireless Power Transfer Technologies

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "E: Electric Vehicles".

Deadline for manuscript submissions: closed (10 March 2022) | Viewed by 10171

Special Issue Editors

Department of Electrical and Computer Engineering, Drexel University, 3141 Chestnut St, Philadelphia, PA 19104, USA
Interests: wireless power transfer including inductive and capacitive wireless charging; advanced power electronics systems.

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Guest Editor
National Engineering Lab for Automotive Electronic Control Technology, Shanghai Jiao Tong University, Shanghai, China
Interests: battery thermal management; wireless power transfer
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Guest Editor would like to invite you to submit your research achievements to a Special Issue of Energies, titled “Advanced Wireless Power Transfer Technologies”. Wireless power transfer technology has been well developed in the past decade, and there are increasing numbers of researchers involved in this emerging technology. This Special Issue will focus on the most recent achievements in the theory and practice of wireless power transfer, especially for transportation, consumer electronics, smart grid, biomedical purposes, and other applications. Topics of interest for publication include, but are not limited to, the following:

  • Wireless power transfer for electronic vehicles;
  • Wireless power transfer for portable electronic devices;
  • Wireless power transfer for biomedical implant devices;
  • Wireless power transfer for industry vehicles, such as automatic guided vehicles;
  • Wireless power transfer for Internet of things (IoTs);
  • Dynamic wireless power transfer;
  • Compensation circuit topology for wireless power transfer;
  • Magnetic coupler design for wireless power transfer;
  • Capacitive coupler design for wireless power transfer;
  • Radio frequency wireless power transfer;
  • High-frequency power converter;
  • Soft-switching technique in resonant circuit;
  • Ultrasonic transducer modeling and analysis;
  • Safety issues in wireless power transfer.

Prof. Dr. Lu Fei
Prof. Dr. Chong Zhu
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. Energies 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 2600 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
  • Inductive power transfer
  • Capacitive power transfer
  • Ultrasonic power transfer
  • Laser power transfer
  • Contactless power transfer
  • Wireless charging
  • Energy harvesting
  • Low-power electronic device charging
  • High-power electric vehicle charging

Published Papers (5 papers)

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Editorial

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2 pages, 149 KiB  
Editorial
Advanced Wireless Power Transfer Technologies
by Fei Lu and Chong Zhu
Energies 2022, 15(9), 3131; https://0-doi-org.brum.beds.ac.uk/10.3390/en15093131 - 25 Apr 2022
Viewed by 1445
Abstract
Wireless power transfer technology is technology in which power is delivered without any metal-to-metal contact, which can make practical applications very convenient [...] Full article
(This article belongs to the Special Issue Advanced Wireless Power Transfer Technologies)

Research

Jump to: Editorial

18 pages, 3270 KiB  
Article
Performance Evaluation of Silicon and GaN Switches for a Small Wireless Power Transfer System
by Demetrio Iero, Riccardo Carotenuto, Massimo Merenda, Fortunato Pezzimenti and Francesco Giuseppe Della Corte
Energies 2022, 15(9), 3029; https://0-doi-org.brum.beds.ac.uk/10.3390/en15093029 - 21 Apr 2022
Cited by 3 | Viewed by 1943
Abstract
In the last few years, the wide diffusion of rechargeable devices has fueled the research interest in wireless power transfer (WPT) technology that offers advantages such as safety, flexibility, and ease of use. Different standards have been developed over the years but a [...] Read more.
In the last few years, the wide diffusion of rechargeable devices has fueled the research interest in wireless power transfer (WPT) technology that offers advantages such as safety, flexibility, and ease of use. Different standards have been developed over the years but a significant part of the global interest is focused on the inductive resonant wireless power transfer. By increasing the resonance frequency, an improvement in the transfer efficiency between transmit and receive coils is generally observed, at the expense, however, of an increase in losses in the switching devices that constitute the transmitting and receiving circuits. This study concerned the performance evaluation of a WPT transmitting circuit built using Gallium Nitride (GaN) or conventional silicon (Si) switching devices, to assess their specific contribution to the overall efficiency of the system. The overall performance of two circuits, respectively based on GaN HEMTs and Si MOSFETs, were compared at frequencies of the order of MHz under different operating conditions. The theory and design choices regarding the WPT circuit, the coils, and the resonant network are also discussed. The comparison shows that the GaN circuit typically performs better than the Si one, but a clear advantage of the GaN solution cannot be established under all operating conditions. Full article
(This article belongs to the Special Issue Advanced Wireless Power Transfer Technologies)
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14 pages, 3482 KiB  
Article
Two-Coil Receiver for Electrical Vehicles in Dynamic Wireless Power Transfer
by Tommaso Campi, Silvano Cruciani, Francesca Maradei and Mauro Feliziani
Energies 2021, 14(22), 7790; https://0-doi-org.brum.beds.ac.uk/10.3390/en14227790 - 21 Nov 2021
Cited by 7 | Viewed by 1406
Abstract
Dynamic wireless power transfer (DWPT) of electric vehicles (EVs) is the future of urban mobility. The DWPT is often based on a series of short track pads embedded in road pavement that wirelessly transfers electrical energy to EVs equipped with a pickup coil [...] Read more.
Dynamic wireless power transfer (DWPT) of electric vehicles (EVs) is the future of urban mobility. The DWPT is often based on a series of short track pads embedded in road pavement that wirelessly transfers electrical energy to EVs equipped with a pickup coil for battery charging. An open problem with this technology is the variation of the coupling factor as a vehicle switches from one transmitting coil to another during its motion. This can cause a significant change in power with possible power spikes and holes. In order to overcome these issues, a new architecture is here proposed based on two pick-up coils mounted in the vehicle underneath. These identical receiver coils are placed in different positions under the vehicle (one in front and the other in the rear) and are activated one at a time so that inductive coupling is always good enough. This innovative configuration has two main advantages: (i) it maintains a nearly constant coupling factor, as well as efficiency and transferred power, as the vehicle moves along the electrified road; (ii) it significantly reduces the cost of road infrastructure. An application is presented to verify the proposed two-coil architecture in comparison with the traditional one-coil. The results of the investigation show the significant improvement achieved in terms of maximum power variation which is nearly stable with the proposed two-coil architecture (only 2.8% variation) while there are many power holes with the traditional single coil architecture. In addition, the number of the required transmitting coils is significantly reduced due to a larger separation between adjacent coils. Full article
(This article belongs to the Special Issue Advanced Wireless Power Transfer Technologies)
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22 pages, 2267 KiB  
Article
Derivation of the Resonance Mechanism for Wireless Power Transfer Using Class-E Amplifier
by Ching-Yao Liu, Guo-Bin Wang, Chih-Chiang Wu, Edward Yi Chang, Stone Cheng and Wei-Hua Chieng
Energies 2021, 14(3), 632; https://0-doi-org.brum.beds.ac.uk/10.3390/en14030632 - 26 Jan 2021
Cited by 11 | Viewed by 2069
Abstract
In this study, we investigated the resonance mechanism of 6.78 MHz resonant wireless power transfer (WPT) systems. The depletion mode of a gallium nitride high-electron-mobility transistor (GaN HEMT) was used to switch the states in a class-E amplifier circuit in this high frequency. [...] Read more.
In this study, we investigated the resonance mechanism of 6.78 MHz resonant wireless power transfer (WPT) systems. The depletion mode of a gallium nitride high-electron-mobility transistor (GaN HEMT) was used to switch the states in a class-E amplifier circuit in this high frequency. The D-mode GaN HEMT without a body diode prevented current leakage from the resonant capacitor when the drain-source voltage became negative. The zero-voltage switching control was derived according to the waveform of the resonant voltage across the D-mode GaN HEMT without the use of body diode conduction. In this study, the effect of the resonant frequency and the duty cycle on the resonance mechanism was derived to achieve the highest WPT efficiency. The result shows that the power transfer efficiency (PTE) is higher than 80% in a range of 40 cm transfer distance, and the power delivered to load (PDL) is measured for different distances. It is also possible to cover different applications related to battery charging and others using the proposed design. Full article
(This article belongs to the Special Issue Advanced Wireless Power Transfer Technologies)
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16 pages, 7423 KiB  
Article
A Metal Object Detection System with Multilayer Detection Coil Layouts for Electric Vehicle Wireless Charging
by Bo Cheng, Jianghua Lu, Yiming Zhang, Guang Pan, Rakan Chabaan and Chunting Chris Mi
Energies 2020, 13(11), 2960; https://0-doi-org.brum.beds.ac.uk/10.3390/en13112960 - 09 Jun 2020
Cited by 21 | Viewed by 2241
Abstract
Non-radiative inductive power transfer is one of the most studied and commercially applied wireless charging technologies, where the magnetic field is employed as the medium for power transfer. In the wireless charging of electric vehicles, the strong magnetic field will heat up any [...] Read more.
Non-radiative inductive power transfer is one of the most studied and commercially applied wireless charging technologies, where the magnetic field is employed as the medium for power transfer. In the wireless charging of electric vehicles, the strong magnetic field will heat up any metal items falling in the charging area due to eddy current induced in the metal objects, causing hazards like fire. Metal object detection (MOD) is necessary for the market penetration of inductive power transfer technology. This paper aims to improve the performance of systems that detect metal objects based on inductance variations. Two novel multi-layer detection coil layouts are proposed, which can not only cover the entire charging area without blind spots but can also be decoupled from the transmitter and receiver to minimize the influence of the magnetic field that is used for power transfer. Two mixed resonant circuits are proposed and proven to have better performance than parallel and series resonance. The impacts of the detection coil layer, trace width, and turn-number are investigated. The test results indicate that the MOD system can detect one-cent coins at various positions of the detection coil printed circuit board, and can also detect various inductance variations without blind spots in the processing circuit. Full article
(This article belongs to the Special Issue Advanced Wireless Power Transfer Technologies)
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