Abstract
From viewpoints of vibration and simplicity of treatment, electrical powered UAVs are superior to combustion engine-powered ones. However, flight time of battery powered ones are too short to perform inspection. Power supplying using tether from external power sources is one of solutions to extend flight time. Tether cable should be light and thin in order not to disturb UAV's flight. In this paper, several power supply methods using tether was analyzed. We concluded that high voltage power supply using DC-DC converter is the solution for tether power supplying.
