Research on Single-Input Multiple-Output Converter for Rotorcraft Unmanned Aerial Vehicle

To satisfy the different voltage requirements of different power units in small rotorcraft unmanned aerial vehicle (UAV), we investigated two different single-input and multiple-output converters, three-output flyback converter and single inductor three-output Buck converter. The hardware components and operating principles of the two single-input and multiple-output converters were analyzed, and the control strategies of them were designed. Furthermore, operations of the two single-input multiple-output converters were simulated using Simulink in Matlab. We found that the three-output flyback converter can be used in the design of UAV when its components are settled and the voltage quality requirements are not strict. When the expansibility of component and high-stable voltage are required for the design of UAV, the single inductor three-output Buck converter should be used.