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Electronics
Special Issues
Wireless Power Transfer and Wireless Energy Harvest
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Wireless Power Transfer and Wireless Energy Harvest

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

Deadline for manuscript submissions: closed (15 April 2023) | Viewed by 15624

Special Issue Editors

Dr. Bo Luo

E-Mail Website
Guest Editor
Department of Electrical Engineering, City University of Hong Kong, Hong Kong, China
Interests: power electronics; wireless power transfer; energy harvest; urban rail transit power supply
Dr. Chaoqiang Jiang

E-Mail Website
Guest Editor
Department of Electrical Engineering, City University of Hong Kong, Hong Kong, China
Interests: power electronics; electric vehicle technologies; machines and drives; wireless power transfer
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Ruikun Mai

E-Mail Website1 Website2
Guest Editor
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
Interests: wireless power transfer; power electronics; transportation electrification
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the intelligence era, a large amount of power electronic and sensor equipment is used widely. Stable power supply has been a big problem for a long time, especially considering large-scale equipment power supply. Wireless power transfer (WPT) and wireless energy harvesting (WEH) are effective methods to solve the above problems. As a non-contact power supply method, WPT can realize safe and reliable access to mobile devices and multiple loads. WEH can convert unused or wasted energy in the surrounding environment into valuable electric energy for the power supply. WPT and WEH technology have been extensively developed in recent years, paving the way for various applications. This Special Issue introduces the latest WPT and WEH systems research and presents power supply solutions for different applications. We welcome original research articles, including rigorous methodology and in-depth discussions to propose novel solutions to challenges in related fields. Commentary articles summarizing the current state of understanding are also welcome.

In this Special Issue, the topics of interest include but are not limited to: 

  • Topology optimization for WPT systems;
  • Coupler design and analysis for WPT systems;
  • System control and modeling;
  • Electromagnetic compatibility;
  • Foreign object detection;
  • Practical design and productization of WPT systems;
  • Energy-harvesting-aided Internet of Things;
  • Wireless-powered communications;
  • System design and optimization for WEH systems.

Dr. Bo Luo
Dr. Chaoqiang Jiang
Prof. Dr. Ruikun Mai
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

  • power supply
  • wireless power transfer
  • energy harvest
  • the internet of things
  • sensors

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Published Papers (5 papers)

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Research

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13 pages, 3345 KiB  
Communication
Nonlinear Modeling and Transmission Efficiency Optimization of MCR-WPT System Based on Monte Carlo-Interior Point Method
by Zhihan Wu, Yanwei Jiang, Guanquan Xiu, Yongcai Wu and Xujian Shu
Electronics 2023, 12(9), 2071; https://doi.org/10.3390/electronics12092071 - 30 Apr 2023
Viewed by 1542
Abstract
With the optimization goal of improving the transmission efficiency of the magnetically coupled resonant wireless power transmission (MCR-WPT) system, the influencing factors and suppression methods of frequency splitting phenomenon (FSP) are analyzed from the perspective of input impedance based on the mutual inductance [...] Read more.
With the optimization goal of improving the transmission efficiency of the magnetically coupled resonant wireless power transmission (MCR-WPT) system, the influencing factors and suppression methods of frequency splitting phenomenon (FSP) are analyzed from the perspective of input impedance based on the mutual inductance model. Then we propose the Monte Carlo-Interior Point method (MC-IPM) for nonlinear modeling to determine the optimal system parameters while ensuring that the system does not suffer from FSP. Finally, the simulation results show that the proposed method can obtain the optimal parameters faster and achieve higher transmission efficiency. The optimized system can meet the practical requirements and provides a reference value for improving the transmission performance of MCR-WPT. Full article
(This article belongs to the Special Issue Wireless Power Transfer and Wireless Energy Harvest)
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18 pages, 8188 KiB  
Article
Analysis of Series-Parallel (SP) Compensation Topologies for Constant Voltage/Constant Current Output in Capacitive Power Transfer System
by Shiqi Li, Chunlin Tang, Hao Cheng, Zhulin Wang, Bo Luo and Jing Jiang
Electronics 2023, 12(1), 245; https://doi.org/10.3390/electronics12010245 - 3 Jan 2023
Cited by 3 | Viewed by 2662
Abstract
This paper analyzed the four series-parallel (SP) compensation topologies to achieve constant current (CC) and voltage (CV) output characteristics and zero phase angle (ZPA) input conditions with fewer compensation components in the capacitive power transfer (CPT) system. There are three main contributions. Firstly, [...] Read more.
This paper analyzed the four series-parallel (SP) compensation topologies to achieve constant current (CC) and voltage (CV) output characteristics and zero phase angle (ZPA) input conditions with fewer compensation components in the capacitive power transfer (CPT) system. There are three main contributions. Firstly, the universal methodology of SP compensation topologies was constructed to achieve CC, CV output, and ZPA conditions. Secondly, four specific SP compensation topologies were investigated and summarized, including double-sided LC, double-sided CL, CL−LC, and LC−CL topologies. Their input–output characteristics are provided, and system efficiency is analyzed. Thirdly, the CL−LC and LC−CL topologies were proposed to realize ZPA conditions under CC and CV output without any external regulating circuit. A CV output LC−CL experiment prototype was implemented to validate the theoretical analysis. Full article
(This article belongs to the Special Issue Wireless Power Transfer and Wireless Energy Harvest)
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20 pages, 10230 KiB  
Article
Design Space Exploration of Antenna Impedance and On-Chip Rectifier for Microwave Wireless Power Transfer
by Takuma Hashimoto and Toru Tanzawa
Electronics 2022, 11(19), 3218; https://doi.org/10.3390/electronics11193218 - 7 Oct 2022
Cited by 4 | Viewed by 2017
Abstract
This paper discusses a design methodology to efficiently determine the best combination of rectenna (rectifier and antenna) to minimize the input power under a given output condition for microwave wireless power transfer (MWPT) without any other external components, such as a matching network, [...] Read more.
This paper discusses a design methodology to efficiently determine the best combination of rectenna (rectifier and antenna) to minimize the input power under a given output condition for microwave wireless power transfer (MWPT) without any other external components, such as a matching network, for cost reduction. A linearized equivalent circuit model is expanded upon to include the microstrip line connecting the antenna and rectifier. Based on the model, the design flow is presented that has mainly three steps: (1) Determination of the equivalent rectifier input impedance and the amplitude of input voltage by running SPICE simulation, (2) Drawing contour plots of input power by rectifier candidate on the antenna impedance plane by conducting model calculation and impedance loci of antenna candidates on the contour plots, and (3) Selecting the combination of antenna and rectifier which gives the minimum input power for all the combinations. To validate the equivalent circuit model and design flow, a single-diode (SD) rectifier and a voltage-doubler (VD) rectifier were fabricated in 65 nm CMOS. The input power to generate 100 μA at 1 Vdc was measured and compared. The model, SPICE and measurement are in good agreement with each other that VD has 30–50% lower input power than SD does. In addition, the sensitivity of the parasitic elements, such as the microstrip line and the bonding wires and pads on the input power, are investigated to explore the design space for rectenna. Full article
(This article belongs to the Special Issue Wireless Power Transfer and Wireless Energy Harvest)
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19 pages, 6118 KiB  
Article
A Multimodal Modulation Scheme for Electric Vehicles’ Wireless Power Transfer Systems, Based on Secondary Impedance
by Wei Liu, Chao Hu and Lijuan Xiang
Electronics 2022, 11(19), 3055; https://doi.org/10.3390/electronics11193055 - 25 Sep 2022
Cited by 4 | Viewed by 1593
Abstract
This study aimed to investigate a multimodal modulation scheme that takes into account the wide range of output characteristics, numerous constraints, and complex working conditions in the wireless charging of electric vehicles. Key electrical parameters and variables in the secondary stages of electric [...] Read more.
This study aimed to investigate a multimodal modulation scheme that takes into account the wide range of output characteristics, numerous constraints, and complex working conditions in the wireless charging of electric vehicles. Key electrical parameters and variables in the secondary stages of electric vehicle wireless power transfer (EV-WPT) systems were evaluated based on capacitive, inductive, and resistive impedance working modes. The limiting duty cycle values, D, of the rectifier were derived by detecting the mutual inductance, M. This multimodal modulation was adopted, based on the secondary equivalent impedance phase, to control the impedance working condition and, hence, achieve optimal working performance. The proposed method can modulate the system performance before and during wireless transmission. The proposed control scheme was verified using a 10 kW EV-WPT experimental prototype under a capacitive impedance working mode with 8.5 kW power output. Our proposed method achieved full power output by modulating the impedance working conditions. Full article
(This article belongs to the Special Issue Wireless Power Transfer and Wireless Energy Harvest)
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Review

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19 pages, 4944 KiB  
Review
Development and Prospect of Wireless Power Transfer Technology Used to Power Unmanned Aerial Vehicle
by Maopeng Wu, Lijuan Su, Jianxun Chen, Xiaoli Duan, Donghua Wu, Yan Cheng and Yu Jiang
Electronics 2022, 11(15), 2297; https://doi.org/10.3390/electronics11152297 - 23 Jul 2022
Cited by 29 | Viewed by 6049
Abstract
Recently, unmanned aerial vehicles (UAV) have been widely used in the military and civil fields. However, the battery power is a key factor that restricts the operation range of the UAV. Using wireless power transfer (WPT) technology to power UAVs can improve the [...] Read more.
Recently, unmanned aerial vehicles (UAV) have been widely used in the military and civil fields. However, the battery power is a key factor that restricts the operation range of the UAV. Using wireless power transfer (WPT) technology to power UAVs can improve the endurance of UAVs and enhance their maneuverability and flexibility. In this paper, the WPT technology is divided into three types: near-field WPT technology, far-field WPT technology and solar-powered UAV. The developments, challenges and prospects of these three types of WPT technologies used to power UAVs are summarized. For each type of WPT technology, the basic working principles are first introduced. The development of each type of WPT technology, as well as the challenges and application prospects in UAV charging, is introduced. The related works consist of academic and industry research, ranging from prototypes to commercial systems. Finally, three types of WPT technology used in UAV charging are compared and discussed, and the advantages and disadvantages of each type of WPT technology are shown. The related research showed that using WPT technology to power the UAV is a promising way to enhance the endurance of the UAV. Full article
(This article belongs to the Special Issue Wireless Power Transfer and Wireless Energy Harvest)
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