High-voltage and low-voltage compatible built-in brushless direct-current power generation system

Abstract

The invention discloses a high-voltage and low-voltage compatible built-in brushless direct-current power generation system, which belong to the technical field of aerospace electrical design and manufacturing. The power generation system comprises a brushless power generator, a starting controller and a power generation controller; the brushless power generator is arranged in an engine and is directly connected with an engine rotating mechanism; the brushless generator is used as a starter in an engine starting state and works in an electric state, drags the engine to an ignition rotating speed and assists power after ignition, and is used as a generator after ignition of the engine and works in a power generation state; the starting controller is used for driving and controlling the electric operation of the generator, and in the starting stage of the engine, the starting controller drives and controls the motor to drag the engine from a static state to a rotating speed meeting the ignition requirement of the engine and assists the engine to operate to reach the required rotating speed to automatically stop the electric driving control of the motor; and the power generation controller rectifies the three-phase alternating current output by the generator into 28.5 V direct current to supply power to a load on an unmanned aerial vehicle.

Description

technical field [0001] The invention belongs to the technical field of aerospace electrical design and manufacture, and in particular relates to a generator system for a turbofan engine used in an unmanned aerial vehicle. Background technique [0002] The power devices for small and medium-sized high-speed UAVs are mainly turbojet and turbofan engines. The starting methods of turbofan engines are divided into air starting and ground starting. In-air starting is a conventional starting method for missiles. Generally, gunpowder starters and pyrotechnic igniters are used. When pyrotechnics work, the impact on the engine is relatively large, and this starting method has an impact on the life of the engine. The common way to start the UAV is the ground start. The common way to start the ground is to blow the high-pressure air source to turn the engine to the ignition speed, and the engine is ignited to start. This kind of starting method needs to be equipped with a ground air s...

AI Technical Summary

Problems solved by technology

This kind of starting method needs to be equipped with a ground air source vehicle and provide high-pressure air source and air source vehicle booster equipment. The guarantee equipment is complex and bulky. After the engine is started, the air source vehicle needs to be manually disengaged.

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