Power Analysis and Experimental Study of Vortex-Excited Vibrating Ocean Current Energy Generation Based on a Cylindrical Permanent Magnet Linear Motor

In order to solve the problem of large mechanical loss and low energy conversion efficiency of traditional rotary motors in the vortex vibration ocean current energy generation system, this paper proposes a vortex vibration power generator based on cylindrical permanent magnet linear motor and conducts marine experiments. Firstly, Ansys software is used to analyze the influence of the magnetizing method, winding form and pole-slot combination on the air-gap magnetism and three-phase induced electromotive force of the linear motor; secondly, the optimization of the positioning force and the load characteristics are explored, and a cylindrical linear motor with radial magnetization, 9 poles and 10 slots combination is designed, which can reach a maximal power of 364 W; finally, the vortex vibration power generation system is constructed and tested on the Zhoushan Finally, a vortex-excited vibration power generation system is constructed and tested on the Zhoushan marine experimental platform, and the results show that the maximum power generation of 49.13 W is obtained when the current velocity is 0.45 m/s, and the energy conversion efficiency of the system is 38.1%.