Design Of Small Permanent Magnet Ocean Wave Power Generation Device And Experimental Research

The research of traditional ocean wave power generation focused on coastal high-power generation equipment.However,the subject research on the small permanent magnet ocean wave power generation device,it is a distributed generation device that provide electrical energy to marine meteorological detection equipment.The wave energy is converted into electrical energy directly,which solve the inconvenience of wind power generation and solar power generation in the marine applications,make up for the low conversion efficiency and the pollution of chemical battery to the environment,have important sense to the development of renewable energy.On the basis of ocean wave theory and the law of electromagnetic induction,according to the principle of permanent magnet vibration generation,the main factors that affect the output induced electromotive force of the power generation device are determined,which provides a reliable theoretical guidance for the simulation analysis of the permanent magnet ocean wave power generation device and the manufacture of the prototype.The structure of permanent magnet is determined and the magnetic field distribution of the permanent magnet is analyzed by the static simulation of the finite element software.In the transient simulation,the main parameters such as the diameter,the height,the distance and the radial width of the coil winding are determined,the electromechanical coupling model of the power generation device is established,and put forward a whole structure of the small permanent magnet ocean wave power generation device.In order to improve the generation efficiency of the power generation device,the optimization of the magnetic circuit is presented.To join the magnetic material silicon steel sheet in the power generation device,the magnetic flux density is increased,and the output induced electromotive force of the power generation device is promoted.The simulation results show that the output induced electromotive force is significantly improved after the optimization of the magnetic circuit.On the basis of analyzing the equivalent circuit of the power generation device,the electrical energy post-processing circuit is designed.The output induced electromotive force of the power generation device is rectified and filtered,and the energy storage system is introduced.It can reach the power supply requirement for marine meteorological detection equipment.The experimental prototype of the power generation device is made according to the identified parameters,the induced electromotive force generated by the power generation device is tested under the different parameters.The simulation data and experimental results are compared and analyzed to verify the feasibility and correctness of the design of the small permanent magnet ocean wave power generation device.