High Efficient Wireless Power Transfer System for AUV with Multiple Coils and Ferrite under Sea

In recent years, AUV has attracted attention in marine exploration and the like. AUV will be put into the sea, conduct exploration activities, picked up from the sea, charge and replace batteries. Because there is a lot of pulling work, it is a loss of time. Wireless power supply is required to improve the efficiency of exploration activities, but sea water is a conductor, it is difficult to transmit wireless power efficiently. In this paper, we propose a highly efficient wireless power transmission system for AUV by using ferrite and multistage coil.