International Journal on Science and Technology

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Dynamic Wireless Charging of Electric Vehicles Using Induction Coupling with Selective Coil Activation

Author(s) Mr. Raparthi Srivardhan Raparthi, Alluri Karthik,, Buchamgari Pujaa
Country India
Abstract Electric vehicles are increasingly adopted as a sustainable alternative to conventional transportation, but cable-based charging still creates operational limitations related to manual connection, connector wear, safety, and charging downtime. This paper presents a prototype dynamic wireless charging system for electric vehicles based on inductive coupling and selective coil activation. The proposed system uses multiple transmitter coils arranged along a charging track, a receiver coil mounted on the vehicle side, an Arduino Uno controller, infrared sensors for vehicle-position detection, relay-based coil switching, a zero-voltage-switching driver, and a rectifier-filter receiver circuit. Instead of energizing all transmitter coils continuously, the controller activates only the coil located below the receiver. This selective activation approach reduces unnecessary power consumption, decreases heat generation, and supports automatic contactless charging. Experimental prototype observations confirm successful wireless power transfer, stable receiver-side DC output for LED and DC motor loads, reliable sensor-controlled switching, and improved output when transmitter and receiver coils are properly aligned. The results also show that coil misalignment, increased air gap, relay delay, and sensor sensitivity are key limitations requiring further improvement before large-scale roadway deployment. The proposed system demonstrates a low-cost and practical foundation for smart electric vehicle charging infrastructure and dynamic charging roads.
Keywords Dynamic wireless charging, electric vehicles, inductive coupling, selective coil activation, wireless power transfer, Arduino, IR sensor, ZVS driver.
Field Engineering
Published In Volume 17, Issue 2, April-June 2026
Published On 2026-06-20
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