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Electronics
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Advances in Wireless Power Transfer and Applications
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Advances in Wireless Power Transfer and Applications

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

Deadline for manuscript submissions: closed (10 September 2021) | Viewed by 12343

Special Issue Editor

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,

Recent technological advancements in wireless power transfer (WPT) have indicated its suitability to applications in which conventional wired power transfer is impossible or undesirable, e.g., portable electronics, electric vehicles, and implanted medical devices, due to its distinct characteristics of flexibility, movability, and cordless implementation. As for today, WPT utilizing magnetic and/or electric field for energy transfer are the most studied topics.

This Special Issue offers an opportunity for both academic and industrial researchers to exchange the latest results and findings within the subject of near-field wireless power transfer technologies as well as present promising future development directions. Technology-related issues, such as efficiency, control, power levels, misalignment tolerance, system cost, magnetic design, modeling, analysis, compensation topologies, wide band gap devices utilization, etc., still remain open and may be addressed in this Special Issue. The Special Issue topics include, but are not limited to:

  • Power converter topologies
  • High power systems
  • Compensation topologies and parameter tuning
  • Loosely coupled transformer analysis and design
  • Control strategies
  • Modeling and simulation
  • Robustness to misalignment
  • Stationary and dynamic battery charging systems
  • Simultaneous wireless power and data transmission
  • SiC/GaN-based systems
  • Magnetic design
  • EMC issues
  • Special applications

Prof. Dr. Alon Kuperman
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. 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
  • compensation networks
  • loosely coupled transformer
  • analysis
  • modeling
  • simulation
  • control

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Published Papers (4 papers)

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Research

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16 pages, 7776 KiB  
Article
Quadrature Demodulator-Assisted Estimation of Load Voltage and Resistance Based on Primary-Side Information of a Wireless Power Transfer Link
by Or Trachtenberg and Alon Kuperman
Electronics 2021, 10(15), 1858; https://doi.org/10.3390/electronics10151858 - 2 Aug 2021
Cited by 3 | Viewed by 1917
Abstract
This paper proposes an algorithm for the extraction of primary-side first harmonic voltage and current components for inductive wireless power transfer (WPT) links by employing quadrature demodulation. Such information allows for the accurate estimation of corresponding receiver-side components and hence permits the monitoring [...] Read more.
This paper proposes an algorithm for the extraction of primary-side first harmonic voltage and current components for inductive wireless power transfer (WPT) links by employing quadrature demodulation. Such information allows for the accurate estimation of corresponding receiver-side components and hence permits the monitoring of the output voltage and resistance necessary for protection and/or control without using either sensors or feedback communication. It is shown that precision estimation is held as long as the parameter values of the system are known and the phasor-domain equivalent circuit is valid (i.e., in continuous conduction mode). On the other hand, upon light load operation (i.e., in discontinuous conduction mode), the proposed technique may still be employed if suitable nonlinear correction is employed. The methodology is applied to a 400 V, 1 kW inductive WPT link operating at a load-independent-voltage-output frequency and is well-verified both by simulations and experiments. Full article
(This article belongs to the Special Issue Advances in Wireless Power Transfer and Applications)
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27 pages, 16923 KiB  
Article
A Graphical Design Methodology Based on Ideal Gyrator and Transformer for Compensation Topology with Load-Independent Output in Inductive Power Transfer System
by Qian Su, Xin Liu, Yan Li, Xiaosong Wang, Zhiqiang Wang and Yu Liu
Electronics 2021, 10(5), 575; https://doi.org/10.3390/electronics10050575 - 1 Mar 2021
Cited by 1 | Viewed by 2775
Abstract
Compensation is crucial in the inductive power transfer system to achieve load-independent constant voltage or constant current output, near-zero reactive power, higher design freedom, and zero-voltage switching of the driver circuit. This article proposes a simple, comprehensive, and innovative graphic design methodology for [...] Read more.
Compensation is crucial in the inductive power transfer system to achieve load-independent constant voltage or constant current output, near-zero reactive power, higher design freedom, and zero-voltage switching of the driver circuit. This article proposes a simple, comprehensive, and innovative graphic design methodology for compensation topology to realize load-independent output at zero-phase-angle frequencies. Four types of graphical models of the loosely coupled transformer that utilize the ideal transformer and gyrator are presented. The combination of four types of models with the source-side/load-side conversion model can realize the load-independent output from the source to load. Instead of previous design methods of solving the equations derived from the circuits, the load-independent frequency, zero-phase angle (ZPA) conditions, and source-to-load voltage/current gain of the compensation topology can be intuitively obtained using the circuit model given in this paper. In addition, not limited to only research of the existing compensation topology, based on the design methodology in this paper, 12 novel compensation topologies that are free from the constraints of transformer parameters and independent of load variations are stated and verified by simulations. In addition, a novel prototype of primary-series inductor–capacitance–capacitance (S/LCC) topology is constructed to demonstrate the proposed design approach. The simulation and experimental results are consistent with the theory, indicating the correctness of the design method. Full article
(This article belongs to the Special Issue Advances in Wireless Power Transfer and Applications)
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23 pages, 8229 KiB  
Article
An Adaptive Current Limiting Controller for a Wireless Power Transmission System Energized by a PV Generator
by Ali Jafer Mahdi, Shah Fahad and Wenhu Tang
Electronics 2020, 9(10), 1648; https://doi.org/10.3390/electronics9101648 - 10 Oct 2020
Cited by 12 | Viewed by 3380
Abstract
The use of a wireless power transmission system (WPTS) in modern applications, such as consumer electronics, renewable energy sources (RESs) and electric vehicles (EVs), can significantly increase the safety and convenience of the power supply. However, low efficiency is a major hurdle to [...] Read more.
The use of a wireless power transmission system (WPTS) in modern applications, such as consumer electronics, renewable energy sources (RESs) and electric vehicles (EVs), can significantly increase the safety and convenience of the power supply. However, low efficiency is a major hurdle to the use of a WPTS in these applications. In this article, an adaptive virtual impedance controller (AVIC) is presented to enhance the wireless power transfer (WPT) efficiency of a photovoltaic generator (PVG) to the load. In the proposed controller, a unique method is employed to adaptively estimate the coefficient of coupling and resonant frequency of the WPTS coils as a function of the distance between the coils. Moreover, a modified incremental conductance (IC) based maximum power tracking (MIC-MPPT) technique is presented to operate the PVG at MPPT mode. The proposed MIC-MPPT is tested via a hardware prototype and the controller validation is carried out in the MATLAB/SIMULINK environment under various uncertainties, such as intermittent irradiance, variable load, and the distance between transmitter (Tx) and receiver (Rx) coils. Finally, a comparative analysis between the proposed controller and the conventional non-adaptive and adaptive resonant frequency controller is presented which confirms the superiority of the proposed controller. Full article
(This article belongs to the Special Issue Advances in Wireless Power Transfer and Applications)
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Other

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15 pages, 6333 KiB  
Technical Note
Improving LCC Series-Based Wireless Power Transfer System Output Power at High Temperature
by Chien-Lung Chen and Chung-Wen Hung
Electronics 2021, 10(22), 2875; https://doi.org/10.3390/electronics10222875 - 22 Nov 2021
Cited by 2 | Viewed by 2316
Abstract
Adding a core to a coupling coil can improve transmission efficiency. However, the added core causes the self-inductance of the coupling coil to increase at a high temperature due to the temperature-sensitive property of the core material’s permeability. The self-inductance increases, causing the [...] Read more.
Adding a core to a coupling coil can improve transmission efficiency. However, the added core causes the self-inductance of the coupling coil to increase at a high temperature due to the temperature-sensitive property of the core material’s permeability. The self-inductance increases, causing the resonance frequency to shift down, thereby decreasing the output power. The 3 dB bandwidth of the system can learn of the correspondence between the output power and the resonance frequency. In order to make sure that the output power does not excessively decrease at a high temperature, this study employs a simulation for the LCC-S-based wireless power transfer system. Adding a minor resistance to shift down the lower cutoff frequency ensures that the resonance frequency yielded by the temperature rise can be higher than the lower cutoff frequency, making the output power higher than half of the maximum. Then, an adjustment on the compensation capacitances on the resonant circuit elevates the output power more. The outcomes are consistent with the prediction. Adding the core to the coupling coil improves transmission efficiency; increasing the bandwidth of the system excessively decreases the output power decline at a high temperature for the temperature-sensitive core material permeability. Full article
(This article belongs to the Special Issue Advances in Wireless Power Transfer and Applications)
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