| Nowadays, human beings have entered into the age of marine development and control. However, the traditional power-supply way of underwater detection devices are hindering the pace of advancing process from continents to oceans. Traditional underwater power-supply equipments rely on batteries or cables, which waste time in recycling and battery charging, or result in the determinate region of equipment. In this paper, the underwater high-power induction coupling power transmission system is designed to solve the above problems. According to the principle of electric-magnetic-electric transformation relations, the underwater induction coupling power transmission system based on principle of electromagnetic induction, which achieves the effect of wireless charging, is characterized by safety, simple and agility.Firstly, the working principle and structure of underwater induction coupling power transmission system is introduced in this paper. Then, each component is analyzed and introduced according to the research content of the system, which focuses on the design of the drive inverter circuit, the design of control and measurement system, the production of coupler as well as the writing of the PC interface.The main work of this paper can be divided into the following parts:1. Design of hardware circuit. A drive inverter circuit is used in this system, which is suitable for high frequency and high power. Thanks to soft switching technology, it can effectively prevent the voltage and current spikes resulted from power switches, as well as reduce switch losses. Besides, suitable MCU and measuring circuits are used in this system, which can accurately collect system’s information that can increase system’s reliability.2. Design of control and measurement system. According to system’s application environment and comparing with various kinds of coupler structures, a coreless coupler is selected as system’s best choice. The parameters of coupler coil are finally determined through theoretical analysis, software simulation, combining with the actual underwater environment.3. Software design. According to the requirement of the system’s sampling values, the machine program is accurately complicated to make MCU efficiently control the PWM output and send the measurement information. C# is used to program the human-machine interface(HMI), which helps the observers to monitor the system in real time.Finally, test results show that the various functional modules of the system work well and the output power and efficiency satisfy the requirement of task design. |
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