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

A hybrid power system and long-endurance technology, which is applied to aircraft power plants, motor vehicles, unmanned aircraft, etc., can solve the problems of high-power engines with heavy weight, low thermal efficiency, and heavy system weight, and achieve energy saving. consumption effect

Pending Publication Date: 2018-04-06
沈观清 +1
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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 Correspo

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

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[0056] The present invention will be further described in detail below in conjunction with the drawings.

[0057] The present invention is a long-endurance UAV hybrid power system based on the following design principles:

[0058] 1. The long-endurance flight system must first solve the contradiction that the aircraft cannot take off due to the over-load of the long-endurance. For example, a pure fuel flight power system or a pure battery flight power system, when a long flight of 20 hours is required, the overweight load prevents the aircraft from taking off.

[0059] 2. The long-endurance flight system should also solve the problem that the efficiency of the existing technology of the hybrid system is lower than that of the pure oil power system. The principle is as follows: the efficiency from the engine to the generator is 0.9, and the power generation efficiency of the generator is 0.8. To the rectifier, the efficiency is 0.95, and the total efficiency is: 0.9*0.8*0.95=0.684;

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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 ...

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Application Information

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IPC IPC(8): B64D27/02B64D31/00
CPCB64D27/02B64D31/00B64D2027/026B64U50/11B64U50/19Y02T50/60
Inventor 沈观清春燕
Owner 沈观清
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