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High-Power and Efficient Wireless Charging for Electrified Transportation

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A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "E: Electric Vehicles".

Deadline for manuscript submissions: 25 June 2024 | Viewed by 4326

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Special Issue Editors

Dr. Junjun Deng

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Guest Editor

School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Interests: wireless power transfer; high-efficiency power converter; motor drive for electric vehicles; advanced charging technology for electric vehicles

Dr. Giuseppe Guidi

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Guest Editor

Electric Power Systems Department, SINTEF Energy Research, Trondheim, Norway
Interests: wireless power transfer; high power converter; electric drive systems; renewable energy systems

Special Issue Information

Dear Colleagues,

Wireless power transfer is being increasingly considered as a practical solution for charging electric vehicles. Particularly, systems based on inductive coupling with resonant compensation have already proven their feasibility and have reached commercial maturity at moderate power levels. Inductive charging systems have advantages in terms of user-friendliness and their ability to operate in harsh climates. Moreover, this can be further emphasized by opportunity charging and dynamic charging. They are considered a perfect match for future self-driving vehicles and other electrified transportation.

Although wireless charging systems can offer high reliability and flexibility, further research within system design, materials, components, and control is needed to improve reliability while reducing costs. Concerns about electromagnetic emissions also increase with the power level and with shrinking coupler sizes of more compact designs.

This Special Issue aims to address the subjects of efficiency, safety, and perspectives of high-power wireless charging systems for electric vehicles. All the following studies are welcome: theoretical and experimental studies on IPT systems; studies concerning the modeling of wireless charging systems as a whole, or limited to the coils and the circuits; studies focusing on the topologies of AC–DC and DC–AC conversion systems. Furthermore, studies concerning magnetic field emissions, dosimetry, and shielding techniques will be considered.

Dr. Junjun Deng
Dr. Giuseppe Guidi
Guest Editors

Manuscript Submission Information

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Keywords

high-power wireless power transfer systems
efficient power converters for wireless charging systems
bidirectional wireless charging for electric vehicles
coupler designs, compensation topologies, and shielding schemes enabling high-power wireless power transfer
electromagnetic modeling and simulation of wireless charging systems
converter topologies and innovative control strategies in wireless charging systems
on-board wireless charging system integration including heat management
safety assessment for EV wireless charging systems
interoperability solutions for public charging facilities

Published Papers (3 papers)

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Research

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28 pages, 5942 KiB

Open AccessArticle

Analysis and Case Study of National Economic Evaluation of Expressway Dynamic Wireless Charging

by Siqi Li, Hengjiao Duan, Jinglin Xia and Lu Xiong

Energies 2022, 15(19), 6924; https://doi.org/10.3390/en15196924 - 21 Sep 2022

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Abstract

As the transportation industry develops new forms of energy and electrification, expressway dynamic wireless charging has become an attractive technology that has the potential to completely solve a range of anxieties associated with electric vehicles. The main objective of this paper was to analyze the economic feasibility of dynamic wireless charging projects on highways. First, the roadside cost of dynamic wireless charging was estimated in terms of equipment, construction, and maintenance costs. Then, various indicators of the national economy of expressway dynamic wireless charging were analyzed. Finally, using the GM (1,1) model, a prediction model for evaluating the associated economic benefits is proposed in this study. As a case study, a national economic evaluation of retrofitting a dynamic wireless charging infrastructure on the Guiyang to Xinzhai Expressway was calculated with the following results: the economic internal rate of return (EIRR) is 11.27% to 29.11%, the economic net present value (ENPV) is 321.59 million RMB to 733.51 million RMB, the economic benefit to cost ratio (EBCR) is 1.02 to 1.32, and the payback period is 3.15 years to 6.35 years. All indicators are higher than the benchmark value for the national economic evaluation, and the sensitivity analysis results are also higher than the benchmark. The results of this paper show that the project is economically feasible and has certain economic benefits. From the perspective of economic benefits, it is necessary to provide more effective information for investors and decision-makers to build dynamic wireless charging highway projects. Full article

(This article belongs to the Special Issue High-Power and Efficient Wireless Charging for Electrified Transportation)

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13 pages, 3665 KiB

Open AccessArticle

The Design and Optimization of Ground-Side Coils for Dynamic Wireless Power Transfer Considering Coupling Variations

by Wenbo Wang, Junjun Deng, Zhenpo Wang and Shuo Wang

Energies 2022, 15(16), 6075; https://doi.org/10.3390/en15166075 - 22 Aug 2022

Viewed by 1182

Abstract

Dynamic wireless power transfer (DWPT) has attracted widespread attention for its charging flexibility; short-segmented DWPT systems are more suitable for EV charging scenarios because of their higher charging efficiency and lower electromagnetic radiation, compared to long-track DWPT systems. For short-segmented DWPT systems, the structural design of the ground-side coil affects the coupling characteristics of the system, while simultaneously the electric vehicle driving speed and coil arrangement also cause coupling variations, and this will inevitably have an impact on the system’s performance. Therefore, this paper demonstrates the coupler design of a short-segmented system for electric vehicles, focusing on the optimization of ground-side coil. The coupling variations causing by driving speed of EV and coil arrangement are taken into account. Considering the tradeoffs and restrictions, a multi-objective optimization process of coils in DWPT systems is proposed based on the Pareto optimizing method, with three objectives: transfer power, high efficiency and low cost. A reasonable optimal solution is selected from the Pareto front to verify the optimizing method through a constructed prototype. Full article

(This article belongs to the Special Issue High-Power and Efficient Wireless Charging for Electrified Transportation)

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Review

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26 pages, 5923 KiB

Open AccessFeature PaperReview

A Review of Power Transfer Systems for Light Rail Vehicles: The Case for Capacitive Wireless Power Transfer

by Kyle John Williams, Kade Wiseman, Sara Deilami, Graham Town and Foad Taghizadeh

Energies 2023, 16(15), 5750; https://doi.org/10.3390/en16155750 - 01 Aug 2023

Cited by 1 | Viewed by 1254

Abstract

Light rail vehicles (LRVs) are increasingly in demand to sustainably meet the transport needs of growing populations in urban centres. LRVs have commonly been powered from the grid by direct-contact overhead catenary systems (OCS); however, catenary-free direct-contact systems, such as via a “hidden rail”, are popular for new installations. Wireless power transfer (WPT) is an emerging power transfer (PT) technology for e-transport with several advantages over direct contact systems, including improved aesthetics and reduced maintenance requirements; however, they are yet to be utilised in LRV systems. This paper provides a review of existing direct-contact and wireless PT technologies for LRVs, followed by an in-depth critical assessment of inductive power transfer (IPT) and capacitive power transfer (CPT) technologies for LRVs. In particular, the feasibility and advantages of CPT for powering LRVs are presented, highlighting the efficacy of CPT with respect to power transfer capability, safety, and other factors. Finally, limitations and recommendations for future works are identified. Full article

(This article belongs to the Special Issue High-Power and Efficient Wireless Charging for Electrified Transportation)

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