| Abstract:A new topology was developed for the fuel-electric hybrid VTOL UAV power system in order to improve the vertical flight duration of the VTOL UAV, reduce the research and application complexity of the hybrid power system, increase the VTOL UAV"s energy usage ratio, and increase its power redundancy. The software and hardware that are appropriate for the hybrid power system of the VTOL UAV with a take-off weight of 15 to 20kg were chosen and developed based on this topology. Additionally, a framework for the integrated verification platform of the hybrid power system was constructed, which can simulate various working conditions and operational modes on the ground for a VTOL UAV powered by fuel-electric hybrid power system. With high human-computer interaction, this platform can collect the power system"s output parameters under various working conditions. Based on this platform, the testing schemes for the steady-state characteristics and dynamic characteristics of the power system were designed, steady-state and dynamic simulation models of the power system were established by using the experimental modeling method. By comparing simulated and experimental results, it was able to confirm the viability of the test and the model"s correctness. The power system was equipped with a VTOL UAV to complete the flight test, and the whole system worked normally, which verified the reliability of the power system under actual working conditions. |