High-voltage mooring unmanned aerial vehicle power supply system

Abstract

The embodiment of the invention provides a high-voltage mooring unmanned aerial vehicle power supply system. The high-voltage mooring unmanned aerial vehicle power supply system comprises an off-boardpower supply and an on-board power supply connected with the off-board power supply. The off-board power supply comprises a first EMC suppression circuit connected with a three-phase power supply, afirst input anti-impact circuit connected with the first EMC suppression circuit, an input rectifying and filtering circuit connected with the first input anti-impact circuit, a plurality of DC / DC modules connected in parallel and connected with the input rectifying and filtering circuit, an output filter circuit connected with an output end of each DC / DC module, a line compensation circuit connected with the output end of the output filter circuit, and an ADC processing module connected with the line compensation circuit. The ADC processing module is connected with each DC / DC module and is used for adjusting the output voltage of each DC / DC module according to a compensation signal of the line compensation circuit. Through the circuit, stability of an output voltage is improved; and meanwhile, the on-board power supply does not need to provide high-power power so that complexity, a size and weight of onboard equipment are reduced.

Description

technical field [0001] The present application relates to the technical field of tethered drones, in particular, to a high-voltage tethered drone power supply system. Background technique [0002] At present, there are four power supply methods for tethered drones on the market: battery power supply, low-voltage power supply, high-voltage power supply reconversion, and direct high-voltage power supply. Among them, battery power supply mainly has the problem of short power supply time, which is mainly used for non-tethered drones. UAV or test flight situation; low-voltage power supply mode, since the rated power of the UAV works at 20kW, the current that the cable can withstand under the usual 48V low-voltage condition is as high as 400 amps, which will greatly increase the weight of the power supply cable; high-voltage power supply The low-voltage conversion method is currently the mainstream solution for tethered drones. For example, 400V high-voltage power supply, the 400V...

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Problems solved by technology

[0002] At present, there are four power supply methods for tethered drones on the market: battery power supply, low-voltage power supply, high-voltage power supply reconversion, and direct high-voltage power supply. Among them, battery power supply mainly has the problem of short power supply time, which is mainly used for non-tethered drones. UAV or test flight situation; low-voltage power supply mode, since the rated power of the UAV works at 20kW, the current that the cable can withstand under the usual 48V low-voltage condition is as high as 400 amps, which will greatly increase the weight of the power supply cable; high-voltage power supply The low-voltage conversion method is currently the mainstream solution for tethered drones. For example, 400V high-voltage power supply, the 400V to 48V conversion components will occupy a large weight. High-density brick-type power supply is used, and its rated power is 600W, calculated according to the rated power of 20kW 34 modules are required, and the weight will be increased by more than 7kg without adding heat dissipation components. Additional heat dissipation components and shells are also required, and the weight is basically higher than 10kg, which increases the weight of the aircraft and reduces the aircraft load. Capability; although direct high-voltage power supply is beneficial to increase the load of the drone, due to the uncertain length of the cable and the unstable voltage to the aircraft port, the voltage stability even exceeds 5% under low current conditions, and the voltage loss is as high as several under high current conditions. Ten volts will greatly affect the stable flight of the UAV, and it will be a huge test for the flight control, ESC and other equipment

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