水下全双工无线能信同传系统磁耦合机构研究OA

Aiming at the problem of mutual interference between power and information channels in the simultaneous wireless high-power energy and full-duplex information transfer system for underwater vehicles,the magnetic coupler was studied.Combined with the curved surface structure of underwater vehicle,an arc-shaped high-integration full-duplex DDQ magnetic coupler was proposed.The Q coil was used to transfer power,and two pairs of DD coils were used to transfer forward and reverse information,respectively.The power transmission channel and the information transmission channel were decoupled from each other.The influence of geometric parameters of magnetic coupler on the transmission effect was explored.Research shows that the coupling effect is better when the distance-diameter ratio of the Q coil is less than 0.6 and the distance-diameter ratio of the DD coil is less than 0.4.The magnetic shielding design was carried out.The ferrite core with a thickness of 5 mm was selected as the shielding material of the magnetic coupler,which could avoid the electromagnetic interference of the leakage magnetic field generated by the simultaneous wireless power and information transfer(SWPIT)system to the electronic components.The prototype of SWPIT system was built and verified.Results show that the high-power energy and full-duplex information transmission is achieved by the proposed magnetic coupler.In the simulated seawater environment,the output power is 8 kW,and the power transmission efficiency is 81％,while the full-duplex information transmission rate is 48 kbit/s.