An Electromagnetic Shielding Method for Seawater Simultaneous Power and Data Transfer in Metal Pressure-Resistant Shell

In this paper, an electromagnetic shielding scheme is proposed to overcome the electromagnetic compatibility challenge of the simultaneous power and data transfer system in the undersea pressure-resistant shell. Firstly, the physical path model of the electric field radiation interference is established, and the accurate four-plate analytical calculation of the excitation source is carried out. The accuracy of the theoretical model is verified by finite element analysis, and the energy distribution of interference source is revealed. On this basis, a physical shielding strategy is proposed. Through the simulation and optimization of shielding effectiveness parameters, the stray electric field radiation is effectively suppressed. Finally, an experimental platform is built. The experimental results show that under the protection of the proposed shielding scheme, the system can achieve 56.516w power transmission and 81.315% overall efficiency, while maintaining 6MB/s high-speed communication. The results show that the shielding scheme is effective in ensuring the stability of wireless energy transmission in complex marine environment.