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Energies
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Advanced Power Electronics and Intelligent Wireless Power Transfer System
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Advanced Power Electronics and Intelligent Wireless Power Transfer System

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F3: Power Electronics".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 5249

Special Issue Editors

Prof. Dr. Chenyang Xia

E-Mail Website
Guest Editor
School of Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 100083, China
Interests: power conversion technology, wireless power transfer, embedded system development
Dr. Zhijuan Liao

E-Mail Website
Co-Guest Editor
School of Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
Interests: wireless power transfer; power conversion technology
Special Issues, Collections and Topics in MDPI journals
Dr. Cancan Rong

E-Mail Website
Co-Guest Editor
School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221008, China
Interests: wireless power transfer; low-frequency metamaterial
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We would like to invite you to submit original research and review articles to a Special Issue on the topic of “Advanced Power Electronics and Intelligent Wireless Power Transfer System” in Energies (IF: 3.004, ISSN 1996-1073).

Power electronic technology has been widely used in new energy systems, energy storage systems, aerospace and other fields due to its great characteristics, which plays a crucial role in efficient conversion and utilization of electric energy. However, the operation range of power converter gradually faces the challenge of wide input voltage, wide output voltage and wide output load, and its operating characteristics are greatly affected. In addition, wireless power transfer, as a typical application area of the power electronic technology, has attracted a great amount of attention due to its convenience, reliability, and safety. Nevertheless, this technology still faces numerous problems, such as short transmission distance, low efficiency and poor anti-migration ability. This Special Issue will include, but is not limited to, the following topics:

  • Power conversion topology and control technology;
  • Power conversion system performance improvement technology;
  • Soft switch range extension technology;
  • Converter dynamics and control design;
  • Intelligent design and control technology;
  • Wireless power transfer technology;
  • Energy harvesting technology;
  • Advanced electrical materials in WPT systems, such as metamaterials, superconductor, ferrite and nanocrystalline.

Prof. Dr. Chenyang Xia
Guest Editor

Dr. Zhijuan Liao
Dr. Cancan Rong
co-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

  • power conversion topology
  • DC-DC converter
  • intellectual design of converter topologies
  • modeling and analysis of power conversion
  • wireless power transfer
  • energy harvesting
  • advanced electrical materials

Published Papers (3 papers)

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Research

14 pages, 3452 KiB  
Article
Robustness of Wireless Power Transfer Systems with Parity-Time Symmetry and Asymmetry
by Haiyan Zhang, Kejia Zhu, Zhiwei Guo, Yuguang Chen, Yong Sun, Jun Jiang, Yunhui Li, Zhuoping Yu and Hong Chen
Energies 2023, 16(12), 4605; https://doi.org/10.3390/en16124605 - 08 Jun 2023
Cited by 2 | Viewed by 1343
Abstract
Recently, wireless power transfer (WPT) technology has attracted much attention and shown rapid development. However, a fundamental challenge emerges in practical applications: how to achieve robust power transfer against the variation of operating conditions, such as the fluctuation of transfer distance, as well [...] Read more.
Recently, wireless power transfer (WPT) technology has attracted much attention and shown rapid development. However, a fundamental challenge emerges in practical applications: how to achieve robust power transfer against the variation of operating conditions, such as the fluctuation of transfer distance, as well as the relative orientation of resonant coils. In this article, we theoretically propose and experimentally demonstrate that the robustness of a parity-time (PT) asymmetric system with unbalanced gain-loss working in a weak coupling region can be improved significantly, compared with that of a PT-symmetric system with balanced gain-loss working in a strong coupling region under the premise that the system works at a fixed optimal frequency. A pure real mode known as bound state in the continuum (BIC) in the weak coupling region of the PT-asymmetric system is adopted to ensure the high efficiency and stability of the WPT and break the limitations of balanced gain-loss of the PT-symmetric system. The better robustness performance originates from the orthogonal state with a pure real eigenmode embedded in the weak coupling region. Further experiments also verify that the PT-asymmetric system can achieve higher efficiency than that of the PT-symmetric system. In addition, we discuss the performance of the WPT system based on the theories of coupled mode theory (CMT) and circuit theory (CT); the BIC in the framework of CMT and a perfect impedance matching condition in the framework of CT for efficient power transfer are consistent. We also conducted power experimental verification of 30 watts, and found the efficiency between the coils can reach over 90% in dynamic scenarios, which meets expectations. The presented framework extends the field of non-Hermitian physics, bridges the gap between the non-ideal PT-symmetric system and a practical engineering application, and introduces a novel WPT mechanism for flexible application scenarios. Our results could provide instructive significance for practical applications of the WPT system in the long term. Full article
(This article belongs to the Special Issue Advanced Power Electronics and Intelligent Wireless Power Transfer System)
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15 pages, 6100 KiB  
Article
A Parameter Design Method for a Wireless Power Transmission System with a Uniform Magnetic Field
by Li Ji, Chi Zhang, Fuchen Ge, Buren Qian and Hongjun Sun
Energies 2022, 15(23), 8829; https://doi.org/10.3390/en15238829 - 23 Nov 2022
Cited by 2 | Viewed by 1316
Abstract
In a wireless power transfer (WPT) system, misalignment on the transceiver side has a major impact on the transmission efficiency. However, a uniform magnetic field can mitigate the detrimental impact of offsets on the system performance. In this paper, an optimized double-D (DD) [...] Read more.
In a wireless power transfer (WPT) system, misalignment on the transceiver side has a major impact on the transmission efficiency. However, a uniform magnetic field can mitigate the detrimental impact of offsets on the system performance. In this paper, an optimized double-D (DD) coil is proposed by dividing the wires into two groups. The parametric design approach proceeds from the outside to the inside of the coil. The uniformity of the magnetic field of the improved design is increased by 20.7% compared to that of a regular DD coil. The average transmission efficiency of the final test prototype can reach 85%, and the offset rates in the X and Y directions are only 3.21% and 3.43%, respectively, when misalignment occurs. This design can effectively improve the anti-offset ability of the system and can be generalized to the design of other types of coils. Full article
(This article belongs to the Special Issue Advanced Power Electronics and Intelligent Wireless Power Transfer System)
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28 pages, 8510 KiB  
Article
A Self-Tuning LCC/SP System for Electric Vehicle Wireless Charging against Large Self- and Mutual Inductance Variations
by Yiyan Zhao, Xuezhe Wei, Zhichao Luo, Meng Xiong and Haifeng Dai
Energies 2022, 15(11), 3980; https://doi.org/10.3390/en15113980 - 27 May 2022
Cited by 2 | Viewed by 1588
Abstract
An LCC/SP self-tuning wireless charging system is proposed herein for use in a wireless charging test bench. With different dislocations in addition to changes in the coil self-inductance and mutual inductance caused by different secondary magnetic shielding materials, the system can ensure that [...] Read more.
An LCC/SP self-tuning wireless charging system is proposed herein for use in a wireless charging test bench. With different dislocations in addition to changes in the coil self-inductance and mutual inductance caused by different secondary magnetic shielding materials, the system can ensure that the high power factor of the primary side remains unchanged without changing the circuit topology. Based on this normalized detuning LCC/SP circuit model, a switch-controlled capacitor (SCC) self-tuning method based on PI control is proposed. The control scheme employs only two MOSFETs and capacitors, without WIFI communication or parameter identification. A 2 kW experimental device was set up in the laboratory, and experimental verification was carried out with large-scale dislocations and different secondary magnetic shielding materials. The experimental results confirm that the system can maintain a high power factor (>0.9) under a system mutual inductance variation of 47.7% and secondary coil self-inductance variation of 12%, and that it can be applied in electric vehicle wireless chargers or high-power wireless charger test benches. Full article
(This article belongs to the Special Issue Advanced Power Electronics and Intelligent Wireless Power Transfer System)
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