Experimental study demonstrates off-grid solar-powered wireless charging for autonomous drones, suggesting viable continuous remote inspection without human intervention.
The aim of this paper is to design an efficient wireless power transfer (WPT) system to autonomously charge a drone without any need for human intervention for the purpose of allowing drone operation to be completely autonomous. The system would be able to utilize an off-grid PV system, meaning it can be used in areas with no grid power. A dedicated high frequency inverter (100 kHz) is designed for the purpose of connecting the PV system to the wireless power transfer system and the Litz wire transmission coils that can operate at high frequency. The secondary side of the WPT would include a rectifier, buck converter, battery protection, and data logging units. Microcontrollers will be installed on both secondary and primary side to be able to initiate/stop the charging process, log data etc. This project promotes the overall goal towards a completely autonomous drone as it helps to charge the drone without the need for human intervention. Rather than deploying humans for the purpose of charging the drone, each off-grid location can be equipped with a solar powered wireless charger that will make the inspection process more convenient. Simulations and experimental results are used to validate the design methodology.
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Raveendhra et al. (2020) studied this question.
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