Abstract
Electric unmanned aerial vehicle (UAV) systems powered solely by battery cannot achieve long endurance. Despite recent improvements in battery technology, UAVs barely last for 4 hours, thereby decreasing the attractiveness of battery-powered UAVs. Progress has been made in developing hybrid-powered solar and battery systems for UAVs. However, the small number of solar UAVs developed indicates the research gap, particularly in the aspect of power system and integration. Accordingly, this paper provides a detailed review of solar cell and battery development applicable to small UAVs. This review includes the technologies of miniature electric motors, batteries, fuel cells, and solar cells. A comprehensive battery and solar cell technology trend is then discussed. This wok elucidates the effect of solar and battery technology progress on solar UAV development. The combination of electric motor, battery, and solar cells offers an excellent solution to the requirements of various long-endurance applications.
Published Version
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