Research on Wireless Charging System Based on Photovoltaic Power Supply

Abstract

Given the popularity of mobile devices and rapid advances in wireless technology, it is impossible to overlook how important charging methods should be as convenient and environmentally sustainable. This paper investigates the PV power supply integration in their wireless charging systems, which aligns well with developing an environmentally safe and renewable alternative for recharging that would alleviate pressure on conventional harvesting of electricity, while also improving ecological conservation and reducing carbon emissions following earlier interests. Firstly, based on the PV battery model modeling methods and fully considering light intensity conditions at various temperatures throughout a year-long experimental validation of the electrical output characteristics of these PV panels. Second, it adapts and optimizes DC-DC converters to the output of PV panels for higher energy conversion efficiency by stabilizing energy outputs due to weathering issues. Additional area for research includes the choice and tuning of Maximum Power Point Tracking (MPPT) algorithms that will enable this system to follow maximum power point under diverse weather and light conditions in order to maximize energy harvesting. Moreover, the paper also performs an in-depth study of coupling transformer design and optimization of main circuit parameters for better energy transmission efficiency and System stability. The feasibility and effectiveness of the PV-powered wireless charging systems are validated by simulation verification as well as experimental testing in this paper.