KEYWORDS: Signal intensity, Resistance, Laser energy, Data transmission, Wireless energy transfer, Optical simulations, Laser applications, Energy transfer, Electrons, Solar radiation models
Laser wireless energy information synchronization transmission technology can transmit signals while transmitting energy, reducing the system's reliance on communication devices. It effectively reduces system weight while increasing energy utilization, making it valuable for long-distance wireless energy transfer systems with low signal rate requirements. In this paper, a finite element simulation model for laser power converter is established. Using this model, the impact of signal energy intensity and load resistance on signal transmission under low-speed signal transmission conditions is studied. The research indicate that under the same signal energy conditions, the signal intensity increases and then decreases with the increase in load resistance, and the optimal signal load resistance occurs earlier than the optimal power transmission load resistance. Additionally, as the signal energy increases, the difference between the signal load resistance and the power transmission load resistance also increases. The mismatch between the maximum signal load resistance and the optimal power transmission load resistance inevitably involves a trade-off between energy and signal. Based on this, the paper discusses the selection method of load resistance in the energy-carrying communication process and calculates the loss of signal intensity and transmission energy under different load resistances. The conclusions of this research provide reference for the field of laser energy-carrying communication.
In the laser wireless power transmission (LWPT) system, the solar panel plays a decisive role as the receiving end of the energy. As the transmission medium of energy in LWPT system, the energy of laser presents generally Gauss distribution, resulting in uneven energy of the laser received by the solar panel, which may affect the transmission efficiency and capacity of the system. In this paper, a 1070nm continuous fiber laser is used to irradiate the In0.3Ga0.7As solar panel, and the temperature distribution on the back of the panel and the IV characteristics were recorded. The results showed that the temperature distribution on the back side of the solar panel was almost the same under the conditions of the same laser power but different energy distribution. In terms of performance of the panel, due to the increase in beam uniformity, the short-circuit current increased by 33.4%, the maximum output power increased by 18.5%. In addition, the irradiation of different laser power was also studied in this paper. The influence of different laser intensity and different beam uniformity on the efficiency of the panel were given.
The temperature rise of the InGaAs solar cells which under the continuous laser exposure is theoretically calculated, and experimentation,correspondingly designed to bismuth telluride thermoelectric power generation and cooling system,thereby enhancing the overall photovoltaic system integrated photoelectric conversion efficiency.
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