Solar-Assisted Low-Power Wireless Charging System with Microcontroller-Based Alignment and Thermal Management for Consumer Electronics

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Chinese explanation / 中文解读

中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。

Original abstract

Background The rapid increase in the use of portable consumer electronics has created a strong need for efficient, safe, and convenient charging solutions. Traditional wired charging systems often suffer from issues such as cable wear, limited mobility, and dependency on grid electricity. Objective To address these challenges, this work presents a solar-assisted low-power wireless charging system that integrates renewable energy harvesting with intelligent monitoring and control mechanisms. Materials and Methods The proposed system utilizes a solar photovoltaic panel to capture and convert solar energy into electrical power, which is stored in a rechargeable battery for continuous operation. This enables off-grid functionality and reduces reliance on conventional power sources, making the system more sustainable and energy-efficient. Wireless power transfer is achieved through inductive coupling between transmitter and receiver coils, ensuring contactless energy transfer for consumer electronic devices. An ATmega328 microcontroller acts as the central processing unit of the system, responsible for monitoring key operational parameters such as coil alignment, power transfer efficiency, and temperature variations. A real-time alignment feedback mechanism is implemented using LED indicators, where a green LED signals optimal alignment and a red LED indicates misalignment, helping users achieve efficient charging conditions. Additionally, a motor driver module (L293D) is incorporated to support controlled operation and safe energy regulation. A thermal monitoring system is also included to prevent overheating and maintain system stability. Results Experimental observations indicate improved energy transfer efficiency, reduced thermal stress, and enhanced reliability compared to conventional wireless charging systems. Conclusion The proposed design offers a compact, eco-friendly, and intelligent solution for low-power charging applications, effectively combining solar energy utilization with smart control techniques for improved performance and sustainability.

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