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Electronics
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Recent Advances in High-Performance Wireless Power Transfer Technologies
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Recent Advances in High-Performance Wireless Power Transfer Technologies

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Microwave and Wireless Communications".

Deadline for manuscript submissions: closed (15 February 2025) | Viewed by 6758

Special Issue Editors

Dr. Wei Zhou

E-Mail Website
Guest Editor
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
Interests: capacitive power transfer; wireless power and signal transfer
Special Issues, Collections and Topics in MDPI journals
Dr. Yang Chen

E-Mail Website
Guest Editor
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
Interests: wireless power transfer
Dr. Zhijuan Liao

E-Mail Website
Guest Editor
School of Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
Interests: wireless power transfer; power conversion technology

Special Issue Information

Dear Colleagues,

In scenarios where conventional wire-based power supply methods are impractical or challenging to implement, wireless power transfer (WPT) technology emerges as an effective alternative. The increasingly diverse power supply scenarios and electrical devices have imposed elevated performance demands on WPT systems. On the one hand, these systems are required to accommodate varying power levels under different coupling conditions while maintaining high efficiency and robustness. Simultaneously, they must conform to electromagnetic compatibility standards across various industries. On the other hand, WPT systems are also expected to encompass multiple auxiliary functions to enhance system performance and user experience. These functionalities may include in-band communication, foreign object detection, load recognition, etc. This Special Issue, titled "Recent Advances in High-Performance Wireless Power Transfer Technologies", focuses on the latest theoretical and applied research achievements in high-performance WPT technology. Original research articles and reviews are welcomed for this Special Issue. Research areas may include (but are not limited to) the following topics:

  • Power semiconductor devices for WPT systems;
  • Power converters for WPT systems;
  • Loss modeling and analysis for WPT systems;
  • MEPT (Maximum Efficiency Point Tracking) for WPT systems;
  • Anti-misalignment techniques for WPT systems;
  • Control techniques for WPT systems;
  • Novel magnetic materials for WPT systems;
  • Active/passive electromagnetic shielding techniques for WPT systems;
  • Electromagnetic radiation and biological safety assessment for WPT systems;
  • Simultaneous power and signal transfer techniques for WPT systems;
  • Foreign object detection techniques for WPT systems;
  • Interoperability of WPT systems;
  • Novel coupling interfaces for WPT systems;
  • Overview of key technologies of WPT systems;
  • Overview of industrialization of WPT technologies.

We look forward to receiving your contributions.

Dr. Wei Zhou
Dr. Yang Chen
Dr. Zhijuan Liao
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

  • wireless power transfer
  • high performance
  • efficiency improvement
  • robustness
  • electromagnetic compatibility
  • auxiliary functions

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Published Papers (6 papers)

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22 pages, 22157 KiB  
Article
A Watt-Level RF Wireless Power Transfer System with Intelligent Auto-Tracking Function
by Zhaoxu Yan, Chuandeng Hu, Bo Hou and Weijia Wen
Electronics 2025, 14(7), 1259; https://doi.org/10.3390/electronics14071259 - 22 Mar 2025
Viewed by 344
Abstract
Radio-frequency (RF) microwave wireless power transfer (WPT) offers an efficient means of delivering energy to a wide array of devices over long distances. Previous RF WPT systems faced significant challenges, including complex hardware and control systems, software deficiencies, insufficient rectification power, lack of [...] Read more.
Radio-frequency (RF) microwave wireless power transfer (WPT) offers an efficient means of delivering energy to a wide array of devices over long distances. Previous RF WPT systems faced significant challenges, including complex hardware and control systems, software deficiencies, insufficient rectification power, lack of high-performance substrate materials, and electromagnetic radiation hazards. Addressing these issues, this paper proposes the world’s first watt-level RF WPT system capable of intelligent continuous tracking and occlusion judgment. Our 5.8 GHz band RF WPT system integrates several advanced technologies, such as millimeter-precision lidar, the multi-object image recognition algorithm, the accurate 6-bit continuous beamforming algorithm, a compact 16-channel 32 W high-power transmitting system, a pair of ultra-low axial ratio circularly polarized antenna arrays, ultra-low-loss high-strength ceramic substrates, and a 2.4 W high-power Schottky diode array rectifier achieving a rectification efficiency of 66.8%. Additionally, we construct a platform to demonstrate the application of the proposed RF WPT system in battery-free vehicles, achieving unprecedented 360∘ uninterrupted power supply to the battery-free vehicle. In summary, this system represents the most functionally complete RF WPT system to date, serving as a milestone for several critical fields such as smart living, transportation electrification, and battery-less/free societies. Full article
(This article belongs to the Special Issue Recent Advances in High-Performance Wireless Power Transfer Technologies)
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19 pages, 5668 KiB  
Article
A Power Boosting Method for Wireless Power Transfer Systems Based on a Multilevel Inverter and Dual-Resonant Network
by Xuejian Ge, Yiwen Wang, Minghao Tang and Lei Wang
Electronics 2024, 13(20), 4066; https://doi.org/10.3390/electronics13204066 - 16 Oct 2024
Cited by 2 | Viewed by 1121
Abstract
With the deepening of research on wireless power transfer (WPT) technology, there is an urgent need to improve the output power of WPT systems. Therefore, this paper proposes a power boosting method based on a multilevel inverter and dual-resonant network. The system adopts [...] Read more.
With the deepening of research on wireless power transfer (WPT) technology, there is an urgent need to improve the output power of WPT systems. Therefore, this paper proposes a power boosting method based on a multilevel inverter and dual-resonant network. The system adopts a five-level inverter whose output voltage contains rich fundamental and harmonic components. The transmitting side adopts a dual-resonant compensation network, and, through its parameter configuration, the system can be in a resonant state at both the fundamental and third harmonic frequencies. The receiving side adopts two receiving channels which can simultaneously receive power at both frequencies, thus boosting the output power. Firstly, the overall structure and operating principle of the system are introduced. Then, the relationship between the system output power and efficiency with the inverter modulation parameters is obtained and the strategy for selecting the optimal operating points of the inverter is designed by comprehensively considering the THD of the inverter output voltage and the efficiency of the system. Furthermore, the proposed system is simulated in a Matlab/Simulink platform. Finally, an experimental setup is created to verify the proposed method. The results show that, compared with the single-channel WPT system, the proposed method can enhance the output power from 160 W to 310 W with a boosting coefficient of nearly double and with the highest efficiency exceeding 92%. Full article
(This article belongs to the Special Issue Recent Advances in High-Performance Wireless Power Transfer Technologies)
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15 pages, 12753 KiB  
Article
An Integrated Double-Sided LCC Compensation Based Dual-Frequency Compatible WPT System with Constant-Current Output and ZVS Operation
by Yafei Chen, Yijia Liu, Zhiliang Yang, Pengfei Gao and Jie Wu
Electronics 2024, 13(18), 3714; https://doi.org/10.3390/electronics13183714 - 19 Sep 2024
Viewed by 983
Abstract
This article presents an integrated double-sided inductance and double capacitances (DS-LCC) compensation based dual-frequency compatible wireless power transfer (WPT) system. A cascaded single-phase multi-frequency inverter (CSMI) is constructed to generate the independent dual-frequency power transfer signals. In order to achieve the [...] Read more.
This article presents an integrated double-sided inductance and double capacitances (DS-LCC) compensation based dual-frequency compatible wireless power transfer (WPT) system. A cascaded single-phase multi-frequency inverter (CSMI) is constructed to generate the independent dual-frequency power transfer signals. In order to achieve the load-independent constant-current output (CCO) at two frequencies, an integrated DS-LCC compensated topology is reconstructed. By configuring the frequency-selective resonating compensation (FSRC) network in the primary side, the power transfer signals at two frequencies can be superimposed into a single transmitting coil, reducing the cost and volume of the system. Furthermore, to implement zero-voltage switching (ZVS) of the CSMI throughout the entire power range, a general parameter design method of the proposed system is also introduced. A 1.5-kW experimental prototype is built to validate the practicability of the presented dual-frequency compatible WPT System. The system can supply power to different loads at two frequencies simultaneously with CCO and ZVS properties. The peak efficiency reaches 91.75% at a 1.2-kW output power. Full article
(This article belongs to the Special Issue Recent Advances in High-Performance Wireless Power Transfer Technologies)
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13 pages, 373 KiB  
Article
Ambient Backscatter-Based User Cooperation for mmWave Wireless-Powered Communication Networks with Lens Antenna Arrays
by Rongbin Guo, Rui Yin, Guan Wang, Congyuan Xu and Jiantao Yuan
Electronics 2024, 13(17), 3485; https://doi.org/10.3390/electronics13173485 - 2 Sep 2024
Cited by 1 | Viewed by 845
Abstract
With the rapid consumer adoption of mobile devices such as tablets and smart phones, tele-traffic has experienced a tremendous growth, making low-power technologies highly desirable for future communication networks. In this paper, we consider an ambient backscatter (AB)-based user cooperation (UC) scheme for [...] Read more.
With the rapid consumer adoption of mobile devices such as tablets and smart phones, tele-traffic has experienced a tremendous growth, making low-power technologies highly desirable for future communication networks. In this paper, we consider an ambient backscatter (AB)-based user cooperation (UC) scheme for mmWave wireless-powered communication networks (WPCNs) with lens antenna arrays. Firstly, we formulate an optimization problem to maximize the minimum rate of two users by jointly designing power and time allocation. Then, we introduce auxiliary variables and transform the original problem into a convex form. Finally, we propose an efficient algorithm to solve the transformed problem. Simulation results demonstrate that the proposed AB-based UC scheme outperforms the competing schemes, thus improving the fairness performance of throughput in WPCNs. Full article
(This article belongs to the Special Issue Recent Advances in High-Performance Wireless Power Transfer Technologies)
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18 pages, 7597 KiB  
Article
Influence Analysis of Voltage Imbalance in Input-Series, Output-Parallel (ISOP) Multichannel IPT System
by Leyu Wang, Pan Sun, Yan Liang, Xusheng Wu and Enguo Rong
Electronics 2024, 13(10), 1865; https://doi.org/10.3390/electronics13101865 - 10 May 2024
Viewed by 865
Abstract
In order to solve the demand for efficient and stable low-voltage, high-power energy transmission capacity of electric vehicle (EV) fast charging, an ISOP-IPT system based on inductor-capacitor-capacitor series (LCC-S) compensation network is proposed. Firstly, the influence of compensation parameter inconsistency on the system [...] Read more.
In order to solve the demand for efficient and stable low-voltage, high-power energy transmission capacity of electric vehicle (EV) fast charging, an ISOP-IPT system based on inductor-capacitor-capacitor series (LCC-S) compensation network is proposed. Firstly, the influence of compensation parameter inconsistency on the system is analyzed. On this basis, considering the resistance of coupler coils, the overall transmission efficiency of the system is analyzed. It is found that the voltage imbalance of the system will affect the working state of inverters, and then affect the stability of the system. The system transmission efficiency increases with the increase in mutual inductance. Moreover, the voltage imbalance caused by the inconsistency of compensation parameters and mutual inductance will reduce the transmission efficiency of the system. Finally, it is concluded that in the parameter design of the ISOP-IPT system, mutual inductance should be improved on the basis of ensuring the input voltage equalization of each channel so as to improve the transmission efficiency and working stability of the system. The experimental platform of a two-channel ISOP-IPT system is built and the maximum efficiency is 94.03%, which verifies the correctness of theoretical analysis. Full article
(This article belongs to the Special Issue Recent Advances in High-Performance Wireless Power Transfer Technologies)
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21 pages, 7637 KiB  
Article
Constant-Voltage and Constant-Current Controls of the Inductive Power Transfer System for Electric Vehicles Based on Full-Bridge Synchronous Rectification
by Jin Cai, Pan Sun, Kai Ji, Xusheng Wu, Hang Ji, Yuxiao Wang and Enguo Rong
Electronics 2024, 13(9), 1686; https://doi.org/10.3390/electronics13091686 - 26 Apr 2024
Cited by 4 | Viewed by 1858
Abstract
When an inductive power transfer (IPT) system conducts wireless charging for electric cars, the coupling coefficient between the coils is easily affected by fluctuations in the external environment. With frequent changes in the battery load impedance, it is difficult for the IPT system [...] Read more.
When an inductive power transfer (IPT) system conducts wireless charging for electric cars, the coupling coefficient between the coils is easily affected by fluctuations in the external environment. With frequent changes in the battery load impedance, it is difficult for the IPT system to achieve constant-voltage and constant-current (CVCC) controls. A CVCC control method is proposed for the IPT system that has a double-sided LCC compensation structure based on full-bridge synchronous rectification. The proposed method achieved good dynamic stability and was able to effectively switch between the output current and voltage of the system by adjusting only the duty cycle of the switch on the secondary side of the rectification bridge. As a result, the system efficiency was improved. The output characteristics of the double-sided LCC compensation structure was derived and the conduction condition with zero voltage was analyzed by using four switches through two conduction time series of the rectifier circuit. Then, the output voltage of the synchronized rectifier was derived. The hardware implementation of the full-bridge controllable rectifier was described in detail. Finally, a MATLAB/Simulink 2018a simulation model was developed and applied to an 11 kW prototype to analyze and validate the design. The results showed that the designed system had good CVCC output characteristics and could maintain constant output under certain coupling offsets. Compared with semi synchronous rectification methods, the proposed method had a higher efficiency, which was 95.6% at the rated load. Full article
(This article belongs to the Special Issue Recent Advances in High-Performance Wireless Power Transfer Technologies)
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