研究目的
To solve the problem of power-limited of sensors and other devices in the smart grid by proposing an efficient laser wireless charging system with variable charging distance and a simple tracking system.
研究成果
The laser wireless charging system demonstrated high conversion efficiency and variable charging distance, making it suitable for smart grid applications. The simplified tracking system reduces costs, and the use of a zoom beam expander allows for adjustable charging distances.
研究不足
The system's performance is dependent on the uniformity of the laser spot energy distribution and the alignment of the laser with the photovoltaic cells. The charging distance is currently limited to 10 to 50 meters.
1：Experimental Design and Method Selection:
The system is composed of an 808nm laser, zoom beam expander, GaAs photovoltaic cell, and energy management module. The design focuses on increasing the uniformity of laser spot energy distribution to improve conversion efficiency.
2：Sample Selection and Data Sources:
The system was tested with sensors on transmission lines in a smart grid application.
3：List of Experimental Equipment and Materials:
808nm laser, zoom beam expander, GaAs photovoltaic cell, energy management module, water-cooling box.
4：Experimental Procedures and Operational Workflow:
The laser emits spots covering photovoltaic cells; the system's performance was tested at various distances and power outputs.
5：Data Analysis Methods:
The output power and conversion efficiency of the photovoltaic cells were measured under different conditions to evaluate system performance.
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