Series-parallel hybrid power unmanned aerial vehicle power system and control method thereof

The invention discloses a series-parallel hybrid power unmanned aerial vehicle power system and a control method thereof. The system comprises a fuselage, a first wing, a second wing, an empennage, a propeller, an engine, a generator, a motor, a clutch, a power battery pack, a control system and a sensor. Various working modes that the piston engine independently outputs power, the motor independently outputs power, the piston engine and the motor output power at the same time, and the power generator charges the power battery while the piston engine outputs power can be achieved, so that the energy distribution requirements of the unmanned aerial vehicle under different flight working conditions are met. Meanwhile, the power of an engine and a motor can be reduced by selecting a series-parallel connection mode, the requirement for the battery capacity is lower, the weight of the unmanned aerial vehicle is reduced, and the unmanned aerial vehicle can better adapt to the low-temperature and low-oxygen environm