Long-endurance unmanned-aircraft oil-electric hybrid power system and control method

Abstract

Provided is a long-endurance unmanned-aircraft oil-electric hybrid power system and control method. The long-endurance unmanned-aircraft oil-electric hybrid power system includes a sensor group, a flight control system, an energy storage lithium battery assembly, a power generation control system, a restart system, a power generation system, and a thrust propeller electromotor; the flight controlsystem controls the energy storage lithium battery assembly according to the information provided by the sensor group, the power generation control system provides electric energy for an aircraft, andthe power generation system is controlled by the power generation control system to provide electric energy for the thrust propeller electromotor and the energy storage lithium battery assembly; theflight control system also includes a takeoff subsystem, a normal flight subsystem, a charging subsystem, and a large-altitude flight subsystem; and the long-endurance cruising ability is increased through the takeoff subsystem, the normal flight subsystem, the charging subsystem, and the large-altitude flight subsystem.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicle power control, in particular to an oil-electric hybrid power system and a control method for a long-endurance unmanned aerial vehicle. Background technique [0002] At present, the power systems used by drones are divided into three categories: jet power, fuel piston engines and thrust propeller motors. Jet power is divided into: fuel jet engine and fuel turboshaft output engine. Due to the complexity of the weight and supporting system and the high price, it is mainly used in the field of large UAVs. Small turbojet engines and turboshaft engines have already been put into the market. For small and medium UAVs, due to their high fuel consumption, the application effect Poor and not widely adopted. [0003] Fuel piston engines are also divided into two categories: one is the piston connecting rod engine and the triangular piston Wankel engine. These two types of engines are widely used in ...

AI Technical Summary

Problems solved by technology

In order to take off and land normally, the aircraft is equipped with a relatively high-power engine for take-off. However, using a high-power engine to work in a low-power state in the air obviously has two major disadvantages: one is that the weight of the higher-power engine is larger and Correspondingly, the weight of the system for maintaining the engine work is relatively large, which becomes a burden in the flight of the UAV

The other is that a high-power fuel engine running at a lower power has low thermal efficiency and high fuel consumption rate, which is fatal for long-endurance aircraft

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