Research on Built-in power supply technology of AUV based on the wave energy

With the development of China extending to deep sea, autonomous underwater vehicles have been more and more widely used. However, due to the way of energy supply, its working range is extremely limited, and hence there is an urgent need for a convenient energy supply. This paper presents a built-in wave energy conversion device for underwater docking station. The floating body and inertial vibrator are taken as the carrier, and the wave energy under the heave motion are obtained. The inertial vibrator generates vibration under the action of spring, and drives the power take-off (PTO) system to work, and converts wave energy into electric energy. Based on the potential flow theory, the coupling kinematics model and the mathematical model of energy conversion of the device are established. The RAO and $P_{m}$ under different springs and mass blocks are obtained from the test. The results showed that the theoretical values are consistent with the experimental values after the mass correction, and the mechanical energy conversion efficiency of the built-in wave energy conversion device underwater docking station is 55%65%, and the peak value of the average output power is 200W800W. It is proved that the device can effectively supply power for AUV and other small aircraft equipment, and it has considerable application prospects.