Single Contact Wireless Power Transfer through the Conductive Surface Without Grounding

In this paper, the single wireless power transfer (SWPT) system without any grounding at high frequency is developed. The experimental setup of SWPT has been developed to extract the power. The designed coil is very compact due to its high frequency, which is helpful in reducing the size as well as the cost of the SWPT system. The maximum power is obtained around 10 W with this SWPT system. The variation of output and input power has been analyzed at different input voltages. The efficiency of the SWPT system has also been discussed and it has been observed that the maximum efficiency is around 40 %.