Evaluation method for hybrid power supply architecture of new energy unmanned aerial vehicle

Abstract

The invention discloses an evaluation method for a hybrid power supply architecture of a new energy unmanned aerial vehicle. The method comprises the following steps that requirements for propulsion mechanical power and electric power in a flight mission are obtained at first through a flight profile, an appearance size and a maximum take-off weight of the unmanned aerial vehicle; analyzing is performed to preliminarily determine specifications and power distribution of a fuel cell and a lithium cell; then, the current hydrogen consumption condition is obtained through a power converter modulewith given efficiency, and a proper gas tank is selected according to the hydrogen consumption to perform overall evaluation of gravity and volume constraints; and if the initial constraints on the energy storage capacity, the unmanned aerial vehicle endurance, the unmanned aerial vehicle weight and the like cannot be met, energy management strategy optimization is performed or a new unmanned aerial vehicle overall design is reselected, so that the take-off weight of the unmanned aerial vehicle is increased or the size of the unmanned aerial vehicle is increased. According to the method, theflight mission profile of the fuel cell unmanned aerial vehicle is combined, and the changes of aerodynamic and flight control parameters are considered, so that the evaluation result of the power system architecture of the unmanned aerial vehicle is more precise and closer to the reality.

Description

technical field [0001] The invention belongs to the field of energy optimization, and in particular relates to a method for evaluating a power supply structure. Background technique [0002] In recent years, with the increasingly serious problems of environmental pollution and energy shortage, the energy systems of traditional aircraft and UAVs will face severe challenges, and further exploration of propulsion systems using new energy sources is imperative. Due to the high efficiency and flexibility of electric energy configuration, electric energy has been widely used in the field of automobiles as the main propulsion energy. Referring to the automotive power system, UAVs use fuel cell-based electrical energy instead of traditional fuel engine mechanical energy as the main thrust source of UAVs, which can effectively improve the flight efficiency of UAVs and reduce noise and pollutant emissions. [0003] At present, although many airlines have released the research goals o...

AI Technical Summary

Problems solved by technology

In terms of new energy drones, there are few reports on evaluation systems similar to the above-mentioned power system architecture

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