A micro-hybrid power system and starting method for unmanned aerial vehicle integrated with starting

Abstract

The invention discloses a micro-hybrid power system and a starting method for an unmanned aerial vehicle with integrated start and start in the technical field of hybrid power supply. The system includes a two-stroke piston engine, an integrated starter motor, a position sensor, a motor controller and a power supply, and the rotor shaft of the generator integrated motor is connected to the crankshaft of the two-stroke piston engine; circuit, a first diode, a second diode and a two-way relay; the drive circuit includes a drive chip, one end of the rectifier circuit is connected to the power supply, the other end is connected to the ground, and the output end of the rectifier circuit is connected to the generator integrated motor; the charging and discharging circuit Including a first supercapacitor and a second supercapacitor, the first supercapacitor is connected in series with the first diode to form a first series circuit; the second supercapacitor is connected in series with the second diode to form a second series circuit, the first series circuit The circuit and the second series circuit are connected in parallel to the rectification circuit. The invention has the advantage of reducing starting resistance and drag torque fluctuations.

Description

technical field [0001] The invention relates to the technical field of hybrid power supply, in particular to an unmanned aerial vehicle micro-hybrid power system with integrated starting and starting method. Background technique [0002] Due to its long battery life and strong load capacity, the micro-miniature aviation hybrid power system is a commonly used power system solution for industrial drones. The micro-miniature aviation hybrid power system in the prior art mainly has the following problems: [0003] (1) In an ordinary hybrid power system, the motor is connected to the crankshaft of the engine through a reducer. Through the setting of the reducer, the speed is reduced and the torque is increased. However, since the ignition speed of the engine is generally 3000-4000 rpm, The setting of the reducer leads to a large starting resistance torque, and the fluctuation of the resistance torque is violent, making it difficult to start. At the same time, the setting of the ...

AI Technical Summary

Problems solved by technology

[0003] (1) In an ordinary hybrid power system, the motor is connected to the crankshaft of the engine through a reducer. Through the setting of the reducer, the speed is reduced and the torque is increased. However, since the ignition speed of the engine is generally 3000-4000 rpm, The setting of the reducer leads to a large starting resistance torque, and the fluctuation of the resistance torque is violent, making it difficult to start. At the same time, the setting of the reducer also has the problems of low reliability, increased self-weight, and low power-to-weight ratio;

[0004] (2) If the reducer in the hybrid power system is removed, although the moment of inertia of the system shaft is increased to a certain extent, due to the existence of the cogging torque of the motor, the fluctuation of the starting resistance and the resistance torque will be further aggravated, and the system will still start. difficulty

Images