Wireless Electric Vehicle Research Articles

Α Solar-Integrated Wireless Charging System for Electric Vehicles

This paper presents a well-integrated system combining photovoltaic (PV) energy harvesting and Wireless Power Transfer (WPT) technology to develop a Solar Wireless Electric Vehicle Charging System (SWEVCS). With the growing adoption of Electric Vehicles (EVs), the demand for efficient and sustainable charging infrastructure has become a critical issue. The proposed system utilizes photovoltaic panels as a clean renewable energy source to charge EVs, eliminating the need for physical cables. The system performance is evaluated using MATLAB simulations, considering key parameters, such as solar irradiance, power output, battery State of Charge (SOC), charging current, and voltage. The results indicate a peak power output of approximately 500 W during midday, and a high SOC of up to 100% by late afternoon. The charging current reaches almost 5 A, demonstrating the high system’s efficiency in wireless energy transfer/WPT. The concerns of this study are the prospects of SWEVCS in minimizing reliance on the power grid while promoting Renewable Energy Solutions (RES) for EV charging. Future work will address scalability challenges and further improvement of WPT efficiency to advance this innovative charging technology.

Review on the Applications of Intelligent Algorithm in Wireless Charging System for Electric Vehicles

This paper presents a comprehensive review of the intelligent algorithms (IAs) based optimization of electric vehicle (EV) wireless charging. First, a general overview of EV wireless charging system is introduced in terms of the compensation circuit, coupling coils, and control strategies, followed by the potential application of IAs. Then, the optimization target, parameter optimization, and structure design of the compensation topologies based on IAs are elaborately expounded by citing current research findings. Subsequently, the IAs are deeply explored for optimizing the systematic parameters, structural geometries, and coupling coils. Then, the IA-based research on the control strategies in the wireless charging system is discussed in detail from three aspects, including power controlling, efficiency optimizing, and parameter tracking. Finally, the prospects for the application of IAs to the EV wireless charging system are summarized and delineated. This paper will be highly beneficial to research entities as a ready reference for the wireless charging system of EVs, with information on IA-based system design.

Development of Solar Wireless Electric Vehicle Charging System

Development of Solar Wireless Electric Vehicle Charging System

Magnetic Gear Wireless Power Transfer System: Prototype and Electric Vehicle Charging

This paper investigates the potential of a magnetic gear wireless power transfer (WPT) system for electric vehicle (EV) charging, with the advantages of low-frequency operation, low foreign object interference, low electromagnetic emissions, and high misalignment tolerance. The study explores the novel impact of Halbach arrays that enhance the flux density in desirable locations while decreasing the flux in undesirable locations, which provides the benefit of decreased foreign object attraction. The initial prototype results demonstrate that the Halbach system can transmit approximately 34.65 W with a transfer efficiency of 64% across a gap of 104 mm. The Halbach system is experimentally compared to a conventional magnet arrangement, which achieved a maximum power transfer of 88 W over 104 mm. The Halbach system is applied to a personal mobility EV to enable wireless charging at low frequency. The axial design of this WPT system has the unique benefit of a 360° radial coupling angle that maintains constant, near-maximum levels of power transfer and efficiency. This full circle coupling angle allows the personal EV to park in any direct vicinity of the charger and achieve the same level of charging given a certain distance. This study delivers important contributions to advancing a low-frequency wireless EV charging technology based on magnetic gears, that sets the stage for future innovations focused on optimizing efficiency, increasing safety, and simplifying the charging process.

Design and Simulation of Inductive Power Transfer Pad for Electric Vehicle Charging

Electric vehicles (EVs) wireless charging is enabled by inductive power transfer (IPT) technology, which eliminates the need for physical connections between the vehicle and the charging station, allowing power to be transmitted without the use of cables. However, in the present wireless charging equipment, the power transfer still needs to be improved. In this work, we present a power transfer structure using a unique “DD circular (DDC) power pad”, which mitigates the two major obstacles of wireless EV charging, due to the mitigating power of electromagnetic field (EMF) leakage emissions and the increase in misalignment tolerance. We present a DDC power pad structure, which integrates features from both double D(DD) and circular power pads. We first build a three-dimensional electromagnetic model based on the DDC structure. A detailed analysis is performed of the electromagnetic characteristics, and the device parameters regarding the power transfer efficiency, coupling coefficient, and mutual inductance are also presented to evaluate the overall performance. Then, we examine the performance of the DDC power pad under various horizontal and vertical misalignment circumstances. The coupling coefficients and mutual inductance, as two essential factors for effective power transmission under dynamic circumstances, are investigated. The findings of misalignment effects on coupling efficiency indicate that the misalignment does not compromise the DDC pad’s robust performance. Therefore, our DDC power pad structure has a better electromagnetic characteristic and a higher misalignment tolerance than conventional circular and DD pads. In general, the DDC structure we present makes it a promising solution for wireless EV charging systems and has good application prospects.

Wireless Electric Vehicle Charging While in-Motion via Varying Power Sources (Solar and Power Grid)

Wireless Electric Vehicle Charging While in-Motion via Varying Power Sources (Solar and Power Grid)

A Self-Resonant Foreign Object Detection System for Metal and Living Object Detection in Electric Vehicle Wireless Charging Systems

A Self-Resonant Foreign Object Detection System for Metal and Living Object Detection in Electric Vehicle Wireless Charging Systems

Design Optimization of Circular Coils in Wireless Electric Vehicle Charging Systems

Design Optimization of Circular Coils in Wireless Electric Vehicle Charging Systems

RETRACTION: Interoperable square‐circular coupled coils for wireless electric vehicle battery charging system with different misalignments

AbstractRETRACTION: C. S. Banothu, S. R. Gorantla, R. V. B. Attuluri, G. R. Evuri: Interoperable square‐circular coupled coils for wireless electric vehicle battery charging system with different misalignments. IET Power Electronics, 1–18 (2024). https://doi.org/10.1049/pel2.12742The above article, published online on 1st July 2024 in Wiley Online Library (wileyonlinelibrary.com) has been retracted by agreement between the journal's Editor‐in‐Chief, Volker Pickert, The Institution of Engineering and Technology and John Wiley & Sons Ltd.Concerns were raised in the article, regarding substantial text overlap with the following source:Design and implementation of an inductive power transfer system for wireless charging of future electric transportation.When the authors were contacted for an explanation, they have acknowledged the text overlap and have requested to retract the article. The authors apologise for the oversight.

New Energy Electric Vehicle Wireless Charging Technology

With the global attention to renewable energy and environmental protection, new energy Electric Vehicles (EVs), as a green travel mode, are gradually becoming the development trend of the future automotive industry. However, problems such as inadequate charging infrastructure and long charging times limit the popularity of electric vehicles. The emergence of wireless charging technology provides a new way to solve these problems. This paper aims to discuss the principle, application status, advantages, challenges and future development trend of wireless charging technology for new energy electric vehicles.

Design and Analysis of Electric Vehicle Wireless Charging System

because of its higher safety, convenience and flexibility than traditional wired charging. Studying the power transmission theory of the wireless charging system and improving the essential components is a significant way to increase its performance. This essay first outlines the present state of research in this field and highlights its primary issues. It then goes on to discuss the various forms of wireless power transmission also called WPT, the elements that make up a magnetic coupling resonant circuit, and its compensation structure based on the theory. Through theoretical derivation and the summary of the analysis of the design optimization scheme, it is concluded that the planar circular coil is better, and the optimization design process is explained to increase this system's efficiency even further. The results show that S-S topology is more suitable and then provides a scheme for the optimization of coil parameters.

Fourier Analysis and Loss Modeling for Inductive Wireless Electric Vehicle Charging With Reduced Stray Field

Fourier Analysis and Loss Modeling for Inductive Wireless Electric Vehicle Charging With Reduced Stray Field

Artificial Intelligence Enabled Future Wireless Electric Vehicles with Multi-Model Learning and Decision Making Models

Artificial Intelligence Enabled Future Wireless Electric Vehicles with Multi-Model Learning and Decision Making Models

A Strong Offset-Resistant Electric Vehicle Wireless Charging System Based on Dual Decoupled Receiving Coils

A Strong Offset-Resistant Electric Vehicle Wireless Charging System Based on Dual Decoupled Receiving Coils

Solar Wireless Electric Vehicle Charging System

This project outlines the design and implementation of a solar-powered electric vehicle charging station that addresses the dual challenges of high gasoline prices and harmful emissions. The number of countries adopting electric vehicles continues to rise, as they not only promote environmental sustainability but also significantly lower transportation costs by substituting expensive fuels with more affordable electricity. In this context, developing an electric vehicle charging infrastructure offers an innovative and effective solution. This system enables electric vehicles to charge while in motion, eliminating the need for stationary charging stops. Powered entirely by solar energy, it requires no additional power supply. The system incorporates solar panels, batteries, transformers, regulator circuits, copper coils, AC/DC converters, Atmega328P controllers, and LCD displays. This technology demonstrates the feasibility of an on-road solar-powered wireless charging system for electric vehicles.

Design and Analysis of a Novel Wireless Electric Vehicle Battery Charging System Using Dual T‐Type Converter With High Efficiency and Bidirectional Capability

ABSTRACTRecently, numerous bidirectional wireless power transfer (WPT) systems with enhanced features for electric vehicle (EV) battery charging have been proposed. The converters in these WPT systems are generally configured with two synchronized full‐bridge–controlled converters operating at fixed duty cycle (two‐level operation) to enable WPT between the transmitter and receiver magnetic charge couplers. However, these require additional circuits to be employed in a wide range of load conditions, which lead to high costs and reduced power density. As a substitute, this article introduces a new wireless EV charging system using bidirectional dual T‐type converter (BDTC) configuration with PWM control. A wide range of load variations can be obtained without any additional circuits/switches with a proposed charging system based on a BDTC. Due to the reduced switching loss, reduced reactive circulating current, low cost, and increased efficiency, along with simple control, the proposed architecture offers significant advantages over traditional WPT systems. The proposed wireless EV charging system operates with series resonance in both directions. A mathematical model of the BDTC converter is developed, and the operating principle is detailed. Experimental results were acquired from the 3.3‐kW laboratory model, which exhibits nearly flat efficiency characteristics under various loading conditions; hence, the feasibility of the BDTC topology is validated.

Dynamic Wireless Charging of Electric Vehicles Using PV Units in Highways

Transitioning from petrol or gas vehicles to electric vehicles (EVs) poses significant challenges in reducing emissions, lowering operational costs, and improving energy storage. Wireless charging EVs offer promising solutions to wired charging limitations such as restricted travel range and lengthy charging times. This paper presents a comprehensive approach to address the challenges of wireless power transfer (WPT) for EVs by optimizing coupling frequency and coil design to enhance efficiency while minimizing electromagnetic interference (EMI) and heat generation. A novel coil design and adaptive hardware are proposed to improve power transfer efficiency (PTE) by defining the optimal magnetic resonant coupling WPT and mitigating coil misalignment, which is considered a significant barrier to the widespread adoption of WPT for EVs. A new methodology for designing and arranging roadside lanes and facilities for dynamic wireless charging (DWC) of EVs is introduced. This includes the optimization of transmitter coils (TCs), receiving coils (RCs), compensation circuits, and high-frequency inverters/converters using the partial differential equation toolbox (pdetool). The integration of wireless charging systems with smart grid technology is explored to enhance energy distribution and reduce peak load issues. The paper proposes a DWC system with multiple segmented transmitters integrated with adaptive renewable photovoltaic (PV) units and a battery system using the utility main grid as a backup. The design process includes the determination of the required PV array capacity, station battery sizing, and inverters/converters to ensure maximum power point tracking (MPPT). To validate the proposed system, it was tested in two scenarios: charging a single EV at different speeds and simultaneously charging two EVs over a 1 km stretch with a 50 kW system, achieving a total range of 500 km. Experimental validation was performed through real-time simulation and hardware tests using an OPAL-RT platform, demonstrating a power transfer efficiency of 90.7%, thus confirming the scalability and feasibility of the system for future EV infrastructure.

Receiver Position Detection System of Wireless Electric Vehicle Charger Based on Novel Active Beacon Structure

Receiver Position Detection System of Wireless Electric Vehicle Charger Based on Novel Active Beacon Structure

An Interoperable and High-Efficiency Wireless Electric Vehicle Charger Based on Reconfigurable Topology

An Interoperable and High-Efficiency Wireless Electric Vehicle Charger Based on Reconfigurable Topology

Wireless power transfer for deep cycle lithium-ion batteries in electric vehicles using inductive coupling

This study presents designing and evaluating a reliable wireless power transfer (WPT) mechanism to charge electric vehicle (EV) batteries using resonant coupling. The EV wireless system was created applying the principles of mutual inductance whereby the receiving and transmitting coils were interlinked and connected to their circuits. Significant mathematical work was also done to obtain the equations for the impedance, the power input, and output power. Proteus software was employed to draw a Printed Circuit Board (PCB) for the reception of the receiver and the transmitter circuits. The simulations were conducted using ANSYS Maxwell and MATLAB softwares, utilizing the key parameters of the transmitter and the receiver coils. The experimental setup included an EV installed with transmitter and receiver circuits, copper coils, a compensation network of capacitors, and a 12 V battery voltage monitor. The study showed that the efficiency of wireless power transfer was 78% with the enhanced power density for the gap ranging between 6 and 20 cm. The innovations presented in this paper are a new lower operating frequency of 70 kHz, coil optimization, and a dynamic study on coil misalignment all of which enhance the efficiency and reduce cost of the proposed system.