面向新能源浮标的平面摆式波浪能收集装置研究

Wave energy is one of the most widely distributed renewable energy sources in the world. The complex wave motion and extremely low frequency in the marine environment pose a challenge for the efficient use of ocean wave energy. A chaotic pendulum wave energy harvester is designed, in which the chaotic plane pendulum is used as an ultra-low frequency random wave energy capture mechanism, combined with a gear speed-increasing transmission mechanism and an electromagnetic rotating mechanism to achieve high power output of the wave energy harvester. In order to better respond to the motion excitation of the buoy in the ocean, dynamic analysis and modeling optimization of the energy capture mechanism are carried out. Besides, a power management circuit is designed for dealing with the irregular and low frequency output voltage of the device. Through the laboratory test and the marine test, the device can generate a maximum open circuit voltage of 10 V in complex waves, and the maximum output power is about 205 mW. In the marine test, the 200 mAh lithium battery can be charged from 3.12 V to 3.6 V in 4 hours, which can be used as a sustainable power source for the clean energy marine buoy low-power sensor.