A Hybrid Solar Powered Wireless Charging System with IoT

Abstract

ThisprojectpresentsaHybridSolarPoweredWirelessChargingSystemwithIoTMonitoring, aimedatpromoting sustainable and efficientenergyutilization.Solarenergyisharvestedusing a photovoltaic panel and stored in a lithium-ion battery bank through a regulated charging mechanism.Thestored energy is used to power two independent wireless charging platforms. Loadpresenceoneachwirelesschargingpadisdetectedusinginfraredsensors,allowingpower to be supplied only when a device is placed on the transmitter, thereby reducing energy wastage. An ESP32 microcontroller controls the relays, sensors, and display system, while audible alerts indicate load detection and charging initiation. A 16×2 LCD provides real-time system status, including battery charging information based on solar availability. The system also incorporates IoT functionality using the Blynk platform to remotely monitor parameterssuchastemperature, humidity, solarvoltage,andwirelesspadstatus.Byintegrating renewable energy harvesting, battery storage, wired power conditioning, and wireless power transferwithinanIoT-enabledframework,theproposedsystemdemonstratesapracticalhybrid charging solution suitable for educational and low-power charging applications.

Introduction

The growing use of portable electronic devices has increased the demand for efficient, safe, and convenient charging systems. Traditional wired charging often faces problems such as cable damage and limited flexibility. To address these issues, renewable energy sources like solar power and technologies such as wireless charging and IoT monitoring are being explored.

This project proposes a Hybrid Solar-Powered Wireless Charging System with IoT Monitoring, which combines solar energy harvesting, battery storage, and wireless power transfer. The system uses an ESP32 microcontroller to control power delivery, detect device presence, and monitor system status. It also enables real-time monitoring through a local display and the Blynk IoT platform via WiFi.

The system consists of several components, including solar panels for energy generation, an MPPT charge controller for efficient battery charging, a lithium-ion battery bank for energy storage, a battery management system for protection, a DC–DC buck converter for voltage regulation, Qi-based wireless charging modules for contactless power transfer, and sensors for monitoring voltage, temperature, and humidity. A 16×2 LCD display and buzzers provide user feedback.

Testing results showed that the system successfully achieved solar-based battery charging, reliable wireless power transfer for low-power devices, automatic load detection, and real-time local and remote monitoring. Overall, the project demonstrates a practical and sustainable solution for smart charging using renewable energy and IoT technology.

Conclusion

The Hybrid Solar Powered Wireless Charging System successfully integrates renewable energy generation, battery storage, intelligent control, wireless power transfer, and IoT monitoringintoasinglecompact system. Theproject demonstrates apractical and sustainable solution for low-power wireless charging applications while promoting energy efficiency and smart monitoring.Themodulardesign and scalability ofthesystem makeit suitableforfuture enhancements and real-world deployment.

References

[1] A.Kursetal.,“Wirelesspowertransferviastronglycoupledmagneticresonances,”Science, vol. 317, no. 5834, pp. 83–86, Jul. 2007. https://www.science.org/doi/10.1126/science.1143254 [2] S. Li and C. C. Mi, “Wireless power transfer for electric vehicle applications,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 3, no. 1, pp. 4–17, Mar. 2015.https://ieeexplore.ieee.org/document/7046252 [3] J. Liu et al., “Solar-powered wireless charging system design and implementation,” IEEE Transactions on Power Electronics, vol. 28, no. 12, pp. 5527–5536, Dec. 2013.https://ieeexplore.ieee.org/document/6502405 [4] M.BiabaniandM.N.Vilathgamuwa,“IoT-basedsmartenergymonitoringsystemfor renewable applications,” IEEE Access, vol. 7, pp. 144635–144646, 2019. https://ieeexplore.ieee.org/document/8855689

Copyright

Copyright © 2026 Sejal Jadhav, Pranav Malusare, Irfan Shaikh , Abdul Shaikh, Ashwini Khade. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.