The invention discloses an airborne multi-motor series power supply circuit of a tethered unmanned aerial vehicle. The airborne multi-motor series power supply circuit comprises a high-voltage directcurrent bus, a plurality of stages of direct-current step-down circuits with similar structures and low-voltage direct-current voltage output, wherein each stage of direct-current step-down circuit iscomposed of a capacitor bridge arm, a switching tube bridge arm and an inductor. The on-off state of a switching tube in each switching tube bridge arms is controlled through a driving circuit, the inductor is used as an energy transfer medium, so that the capacitor bridge arms are charged and discharged, and finally, a high-voltage direct-current power supply is converted into a plurality of low-voltage direct-current power supplies to serve as a power supply of each motor driving circuit. The circuit disclosed by the invention is simple and easy to implement, relatively low in voltage resistance requirement on devices, relatively large in device selection range and relatively low in cost, and the dead weight of the unmanned aerial vehicle can be reduced, so that the unmanned aerial vehicle is enabled to have relatively high load capacity.
本发明公开了一种系留无人机机载多电机串连供电电路,包括高压直流母线;若干级具有相似结构的直流降压电路,所述每级直流降压电路均由电容桥臂、开关管桥臂和电感构成;低压直流电压输出。通过驱动电路控制所述各开关管桥臂中开关管的开通关断状态,以所述电感为能量转移媒介,从而对所述电容桥臂进行充放电,最终实现将高压直流电源转换为多个低压直流电源,从而作为各个电机驱动电路的供电电源。本发明电路简单易行,对器件的耐压要求较低,器件选择范围较大,成本较低,且可以减轻无人机自重,使其具有更大的负载能力。
Airborne multi-motor series power supply circuit of tethered unmanned aerial vehicle
一种系留无人机机载多电机串连供电电路
2020-04-17
Patent
Elektronische Ressource
Chinesisch
IPC: | B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |