Wireless Mobile Charging Using Inductive Coupling

Abstract

Wireless charging technology is revolutionizing the way electronic devices are powered, offering convenience and flexibility. This project focuses on the design and implementation of a high-efficiency wireless mobile charging system using inductive coupling, capable of delivering 22W power to modern fast-charging smartphones. The system operates at a resonant frequency of 150 kHz, leveraging optimized transmitter and receiver coils to ensure maximum energy transfer efficiency. The design incorporates 555 timer, IRF540N MOSFET, LC resonant circuits and optimized coil alignment to enhance efficiency. Schottky rectifiers, and XL6009 buck converter, ensure stable output with safety mechanisms. Simulation and experimental results confirm effective energy transfer, even in the presence of alignment challenges and EMI (electromagnetic interference), making this system a promising solution for next-generation mobile charging. Thermal management strategies and robust safety features, such as overcurrent and overvoltage protection, ensure reliable and secure operation.