Available Energy Analysis of Electric Unmanned Aerial Vehicle Hybrid Energy System

Abstract

The issue of energy and power systems is the main challenge faced by electric unmanned aerial vehicles for long endurance. Under the power demand conditions of typical mission profiles of electric drones, this paper establishes an energy balance equation between the hybrid energy system power supply of electric drones and the power demand of drones. Considering the impact of operating temperature of each battery on power generation performance, a heat transfer model for solar cells, fuel cells, and lithium batteries was established. The heat transfer process of hybrid energy systems was analyzed. Based on the heat transfer model of hybrid energy systems, the heat transfer changes of solar cells, fuel cells, and lithium batteries were analyzed, and the heat transfer changes of hybrid energy systems were studied. The heat loss changes of each battery subsystem with operating temperature were given. The results show that the hybrid energy system has the best power generation performance at the reference temperature, and changes in operating temperature will cause thermal losses and reduce power generation.