Design of tile shaped coil structure for wireless power transmission for underwater vehicle

Abstract

A pair of tile-shaped transmitting and receiving coils, which is suitable for wireless power transfer system of autonomous underwater vehicle (AUV), is proposed in this paper. Both coils are designed as the tile shape to fit the AUV’s outer shell. And the transmitting coil which is located on the dock is a little larger than the receiving coil that is embedded in the UAV. With the HFSS software, the proposed coil shape was optimized. The performance of the coils was analyzed. By adjusting the coil offset distance and angle. the positioning relationship between the two coils was optimized. A serial-serial compensation topology was established, and an appropriate capacitor was selected to construct the WPT system. The experimental results verified the correctness of the theoretical analysis. The output power reached 30 W and the transmission efficiency reached 68.5%.