Article
Chemistry, Analytical
Juan M. Romero-Arguello, Anh-Vu Pham, Christopher S. Gardner, Brad T. Funsten
Summary: This paper presents the design and development of miniature coils for wireless power and data transfer through metal, demonstrating successful power and data transfer through aluminum using harvested power.
Article
Chemistry, Multidisciplinary
Alicia Trivino, Inmaculada Casaucao, Juan Carlos Quiros, Paula Perez, Antonio Rojas
Summary: Unmanned aerial vehicles can benefit from wireless power transfer, and a feasible sustainable magnetic material, MagPlast 36-33, is proposed to improve the efficiency of the wireless charger for lightweight drones.
Article
Engineering, Biomedical
Chunyan Xiao, Sihui Hao, Dingning Cheng, Chunmao Liao
Summary: This study aims to investigate the safety evaluation method and optimal operation frequency of a wireless charging system for cardiac pacemakers. By establishing a wireless power transfer model considering the AC resistance of coils and deriving the analytical solution to the current in coupling coils, the effect of frequency is revealed. The study proposes a safety evaluation method that comprehensively considers SAR, electric field, efficiency, temperature rise, and EMI, and determines the optimal frequency based on the evaluation results.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Brian S. Gu, Tharindu Dharmakeerthi, Seho Kim, Michael J. O'Sullivan, Grant A. Covic
Summary: This article proposes a reduced ferrite inductive power transfer system for electric vehicle charging, which uses ferrite-based soft magnetic composites to reduce system cost and improve mechanical robustness. The optimized system reduces ferrite volume by 63% and exhibits minimal deterioration in terms of coupling reduction and magnetic field leakage.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Yao Wang, Hua Zhang, Yue Cao, Fei Lu
Summary: Wireless power transfer (WPT) is an effective solution for electric vehicle charging. This article focuses on capacitive power transfer (CPT) and explores opportunities not yet reported in existing literature, based on duality with inductive power transfer (IPT). The article proposes a generic modeling method, compares power transfer mechanisms, demonstrates duality between IPT and CPT circuits, derives 14 CPT topologies based on duality with IPT circuits, and conducts a detailed comparison of these circuits.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2023)
Article
Energy & Fuels
Mattia Simonazzi, Ugo Reggiani, Leonardo Sandrolini
Summary: This study investigates the possibility of increasing transmission efficiency in mid-range wireless power transfer applications by inserting resonant relay coils. The results show that the current distribution depends on the load and receiver position, and the theoretical findings are validated through experimental measurements.
Article
Engineering, Electrical & Electronic
Vahid Zahiri Barsari, Duleepa J. Thrimawithana, Grant A. Covic
Summary: The article introduces a simple and robust push-pull driven coupler array (PPCA) to decrease the number of switches required for driving in-road couplers in dynamic IPT systems. This configuration allows for independently energizing multiple primary IPT couplers without proportionally increasing current stress on the switches, improving the system's reliability and economic feasibility.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Bin Yang, Binshan Zhang, Zeheng Zhang, Ying Luo, Ruikun Mai, Zhengyou He, Yang Chen
Summary: This article proposes a clamped inductive power transfer (IPT) system to improve antimisalignment ability through dual-mode operation, without the need for coupling identification, output detection, or feedback communication. Experimental results show that the proposed method can maintain stable output power between 440 and 480 W with coupling varying from 0.14 to 0.39, while the efficiency is from 83.22% to 93.55%.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Bin Yang, Yiyang Li, Zeheng Zhang, Shuangjiang He, Yuner Peng, Yang Chen, Zhengyou He, Ruikun Mai
Summary: This article analyzes the impact of misalignment on the performance of an inductive power transfer system and proposes a method to maintain stable power transmission. By adopting two discrete frequencies, the coupling range is extended and the efficiency is improved.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2023)
Article
Engineering, Electrical & Electronic
Maryam Heidarian, Samuel J. Burgess
Summary: Power transfer efficiency (PTE) is a key performance parameter in the development of resonant inductive power transfer (IPT) systems. A new figure-of-merit (FoM), called the strong coupling factor (P-scf), is proposed to find an optimum coil geometry for maximizing PTE.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2021)
Article
Computer Science, Information Systems
Jintao Hu, Liangxi He, Heng Liu, Raymond Wai Man Ng, Chi-Kwan Lee
Summary: In this paper, a zone impedance matching technique is proposed to enhance the power transfer capability in inductive charging applications. Through pre-matching the transmitter coil, the desired coupling coefficients can be achieved, resulting in higher power delivery.
Article
Engineering, Chemical
Chang-Hua Lin, Mohammad Amir, Mohd Tariq, Mohd Shahvez, Basem Alamri, Ahmad Alahmadi, Mobashshir Siddiqui, Abdul R. Beig
Summary: This paper presents an analysis and discussion of two prominent wireless charging methods, IPT and CPT, comparing different plate geometries and investigating the effects of foreign particles and ceramic coatings on capacitance and energy transfer density. The study also simulates the impact of naturally occurring particles such as water, sand, and wet sand on power transfer in CPT systems.
Review
Energy & Fuels
Kyle John Williams, Kade Wiseman, Sara Deilami, Graham Town, Foad Taghizadeh
Summary: Light rail vehicles (LRVs) are increasingly in demand to meet the transportation needs of growing urban populations sustainably. This paper reviews existing direct-contact and wireless power transfer (PT) technologies for LRVs and evaluates the feasibility and advantages of inductive power transfer (IPT) and capacitive power transfer (CPT) technologies. It highlights the efficacy of CPT in terms of power transfer capability, safety, and other factors. Limitations and recommendations for future works are also identified.
Article
Engineering, Electrical & Electronic
Shuang Nie, Mehanathan Pathmanathan, Netan Yakop, Zhichao Luo, Peter W. Lehn
Summary: A three-coil decoupled transmitter is developed for inductive power transfer system of electric vehicle charging, capable of overcoming large receiver lateral misalignment and minimizing coil loss through optimized current distribution. It achieves high efficiency energy transfer with reduced leakage flux.
IET POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Huanyu Yang, Yefei Xu, Yundong Gu, Chenyan Zhu, Jie Yu, Ruikun Mai, Yong Li, Zhengyou He, Udaya Kumara Madawala
Summary: An inductive power transfer system is used for wireless charging of reefer containers at container terminals to eliminate plug-in/out actions and save space. A load-power-based efficiency model is proposed to analyze system efficiency, showing that by optimizing the input voltage, efficiency can be improved by up to 7.6% to 7.2%. Experimental results with a prototype validate the improved efficiency compared to fixed input voltage conditions.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Ying Cathy Liu, Jiantao Zhang, Chi K. Tse, Chunbo Zhu, Siu-Chung Wong
Summary: This article extends second-order compensated IPT converters to third-order, achieving load-independent current or voltage output, and analyzes the system sensitivity to parameter fluctuation. The results provide a design guide for parameter selection and reveal the roles of additional input or output components in reducing system sensitivity.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Energy & Fuels
Jiantao Zhang, Ying Liu, Chunbo Zhu, Ching Chuen Chan
Summary: This paper addresses the design of inductive power transfer (IPT) systems for multi-load applications. By establishing equivalent circuit models for different topologies, the general transfer characteristics are obtained and analyzed. Design principles for IPT circuits in multi-load environments and a control strategy for impedance matching and communication are proposed and experimentally validated.
Review
Chemistry, Multidisciplinary
De'an Wang, Jiantao Zhang, Shumei Cui, Zhi Bie, Kai Song, Chunbo Zhu, Milyaev Igor Matveevich
Summary: This paper provides an extensive review of the development and application of high-performance magnetic materials in magnetic coupling resonant wireless power transfer (MCR-WPT). It offers an exclusive reference to researchers and engineers interested in the technology, highlighting critical issues to be addressed. The potential challenges and opportunities of WPT magnetic materials are presented, along with the future development directions of the technology.
Proceedings Paper
Engineering, Electrical & Electronic
Jiantao Zhang, Ying Liu, Chao Cui, Zhiyuan Wang, Shumei Cui, Chunbo Zhu
2019 22ND INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS 2019)
(2019)
