EV Wireless Inductive Power Pad and Resonant Magnetic
Field Coupling Multiple Unit Station
Adnan Ur Rahaman.A B. E. Automobile; Kishore.A B. E. Automobile
Sathyabama Institute of Science and Technology, 600119 Chennai, India
DOI: https://doi.org/10.51583/IJLTEMAS.2026.1501000117
Received: 12 February 2026; Accepted: 17 February 2026; Published: 21 February 2026
ABSTRACT
The high rate of the electric vehicle (EV) adoption increased the pressure of finding the efficient and
convenient to use and reliable types of charging technologies. The traditional plug-in charging solutions
have the drawbacks of connector wear, environmental interaction and exposure, inconvenience to the user
and limited accessibility. To eliminate these drawbacks, this project suggests and designs a 4-wheel electric
vehicle wireless charging system based on the concept of resonant inductive coupling with several
transmission pads. The proposed system incorporates two or three copper-based transmission pads beneath
the charging surface and they produce a high-frequency alternating magnetic field. This magnetic flux is
then picked up by corresponding receiver coils installed under the electric vehicle and converted into
electrical energy that is used to charge up the battery. At a resonant frequency, the system greatly increases
the power transfer efficiency and allows efficient transfer of energy over a specified air gap without the
need to touch.This design provided several transmission pads, which are the main characteristic of a design,
so that it is more tolerant to misalignment of the vehicle and changes in the parking position. The multi-
pad design guarantees a closer distribution of the magnetic field to create a balanced power distribution to
the battery system and less power loss when compared to single-pad wireless charging systems. Moreover,
the modular pad system can scale the power level and can be used in a flexible deployment in both
residential and public charging applications. The system architecture comprises of the high frequency
inverter, resonant compensation networks, rectification and regulation phases and battery management
interface to provide safe and efficient charging. The parameters that performance analysis is concerned
with include the efficiency of coupling, power transfer ability, alignment tolerability and thermal
characteristics of the coils. The experiment using a scaled version has shown credible results of wireless
power transfer, increased flexibility of alignment and constant stationary charging..
Keywords: Electric Vehicle (EV), Wireless Power Transfer (WPT), Resonant Inductive Coupling,
Wireless EV Charging, Multi-Pad Charging System, Inductive Charging Coils, Contactless Energy
Transfer, Battery Charging System..
INTRODUCTION
The world transportation industry is experiencing huge transformation based on the requirement to decrease
greenhouse gas emission and minimize the reliance on fossil fuel, and encourage the use of sustainable
energy. Electric vehicles (EVs) have become one of the solutions to these problems because they are very
efficient, cost-effective, and have a costless operation with regard to the environment. The constant
improvements in battery technology, power electronics and motor control systems have greatly enhanced
the performance and range of EVs. Nevertheless, even with such advancements in technology, the creation
of efficient, reliable, and user-friendly charging networks has been one of the necessary issues to make EVs
widespread. The traditional plug-in charging systems do need physical connectors which are prone to
mechanical damages, corrosions as well as other safety concerns like electric shocks and short circuits.
Also, the necessity of manual cable management can be inconvenient to users and challenging in the severe
environmental factors, which leads to the investigation of other charging approaches and makes it safer and
more durable and convenient.