Underwater Energy Transmit System Based On Contactless Electromagnetic Couple

Currently, the underwater equipment is mainly powered by the lithium batteries or cables provided. Limited capacity of lithium batteries and cables from the power supply restricts the equipment activity area. In this paper, energy Transmit system based on contactless electromagnetic coupling is designed to provide this new idea to solve the problem. Underwater Contactless Power Transmit System is a system of energy Transmit and conversion, mainly using electromagnetic couple technology and the high frequency inverter technology to provide energy for underwater work equipment in the contactless state, making the equipment obtain energy easily efficiently and flexible.This paper introduces applications of the energy Transmit system by the contactless electromagnetic couple, and the composition of system. Based on underwater environment, the design of various system components described, which focuses on the design of high frequency drive circuit and coupler design.The all system can be described as three parts as follows:1 System is suitable as having a high-power full-bridge inverter circuit, with two levels of action to accelerate the switch to reverse sliding structure, while an effective solution to bridge opened between the upper and lower turn-off glitches when the interference.2 The contactless electromagnetic coupler uses a high frequency ferrite core. For the different working environment, the different core is selected. According to the characteristics of the core work in the water model, we use the finite element analysis software ANSYS simulation of the model. With the revision of relevant parameters, many times of the simulation finally get the best results and then realized in the water experiment.3 Controling Circuit. According to the water signal control system, real-time operating parameters of the system state are send to the host computer, provides the PWM inverter control signal.Debugging process in the experiment contains some steps as follow: sending and receiving circuit of indoor testing, testing underwater, the control circuit of the functional experiments, and the overall system function debugging. Experimental results show successful implementation of system functionality.