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Development of a Wireless Electric Vehicle Charging System Using Resonant Inductive Coupling
Subject area: Science,Engineering and Technology · Area of research: Wireless Charging
Abstract
Because of the increasing number of electric vehicles (EVs) being adopted, there has been more interest in wireless charging as a substitute for plug-in systems. This study describes the design and development of a wireless EV charging system which uses resonant inductive coupling, meaning that electrical power is transferred between the transmitting and receiving coils by means of magnetic resonance at the same resonant frequency. The system consists of a transmitting coil that is connected to an AC power source and a receiving coil that is built into the vehicle's battery charging circuit. Experiments were carried out at coil separation distances ranging from 5 to 10 cm and under various alignment situations. The greatest charging efficiency was obtained when the coils were properly aligned. As the separation was increased from 5 cm to 10 cm, the efficiency dropped, and a comparable decrease was seen when the receiving coil was moved from the centre of the transmitting coil. Power was still transferred under the misalignment conditions that were tested, even though the amount of power transferred decreased as the position of the coil became less favourable. The findings show that resonant inductive coupling can be employed for short-range wireless EV charging, especially in cases where the transmitting and receiving coils can be kept close together and well aligned. The experiments were carried out in controlled laboratory conditions and did not take into account factors such as the position in which the vehicle is parked, variations in temperature, the materials surrounding the system, or long-term degradation of the components. It would be necessary to carry out testing under more realistic operating conditions in order to find out how these factors influence the system's efficiency and reliability in actual EV applications.
Keywords
wireless power transfer (WPT); resonant inductive coupling; electric vehicle charging; energy efficiency; smart mobility
References
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How to cite this paper
@article{1722819,
author = {Dr. Frances Nkemdirim Evwodere},
title = {Development of a Wireless Electric Vehicle Charging System Using Resonant Inductive Coupling},
journal = {Iconic Research And Engineering Journals},
year = {2026},
volume = {10},
number = {3},
pages = {4058-4067},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/1722819.pdf},
abstract = {Because of the increasing number of electric vehicles (EVs) being adopted, there has been more interest in wireless charging as a substitute for plug-in systems. This study describes the design and development of a wireless EV charging system which uses resonant inductive coupling, meaning that electrical power is transferred between the transmitting and receiving coils by means of magnetic resonance at the same resonant frequency. The system consists of a transmitting coil that is connected to an AC power source and a receiving coil that is built into the vehicle's battery charging circuit. Experiments were carried out at coil separation distances ranging from 5 to 10 cm and under various alignment situations. The greatest charging efficiency was obtained when the coils were properly aligned. As the separation was increased from 5 cm to 10 cm, the efficiency dropped, and a comparable decrease was seen when the receiving coil was moved from the centre of the transmitting coil. Power was still transferred under the misalignment conditions that were tested, even though the amount of power transferred decreased as the position of the coil became less favourable. The findings show that resonant inductive coupling can be employed for short-range wireless EV charging, especially in cases where the transmitting and receiving coils can be kept close together and well aligned. The experiments were carried out in controlled laboratory conditions and did not take into account factors such as the position in which the vehicle is parked, variations in temperature, the materials surrounding the system, or long-term degradation of the components. It would be necessary to carry out testing under more realistic operating conditions in order to find out how these factors influence the system's efficiency and reliability in actual EV applications.},
keywords = {wireless power transfer (WPT); resonant inductive coupling; electric vehicle charging; energy efficiency; smart mobility},
month = {September},
}