Optimized design of laser power supply system for lightweight multi-rotor UAV
The development of UAV technology has led to its widespread use in military and civil applications,but the limited energy density of conventional batteries limits its flight time,while laser energy supply systems can be used to extend the range of UAVs.The aim of this paper is to propose an optimized design method for the laser powered receiver array and expanded beam collimation system of a light multi-rotor UAV.The transmission power loss of the laser energy supply system is quantified and analyzed through joint Matlab and Simulink simulations.The ratio between the design radius of the PV array and the initial spot beam waist radius during laser energy transfer is defined as a scaling factor,and the total energy transfer efficiency is refined into atmospheric transfer efficiency,cut-off efficiency,Gaussian filling efficiency and photoelectric conversion efficiency.Detailed design calculations are carried out using a light multi-rotor UAV in a hovering attitude as the base operating condition.The results show that there is an optimum value for the scaling factor within a given PV array design radius and transmission distance,that the PV array design radius has a large effect on the long-range energy transfer efficiency,and that the truncation efficiency decreases as the energy transfer distance increases to become the dominant factor.
laser beam transmissionlaser power transmissionbeam expansion beam collimationconversion efficiency
万方数据
维普
