Analysis of A Linear-Rotary Generator With Magnetic Gears for Wave Power Generation

In order to solve the problem of low power density of low-speed direct-drive linear wave generators, a linear-rotary generator structure with a magnetic gear speed-increasing effect is proposed in this paper. The low-speed linear motion is converted into high-speed rotary motion through the magnetic gear screw. A double-stator axial flux generator and a magnetic gear form a composite generator structure. The rotor speed is further increased. The working principle of the generator is described. The electromagnetic properties of the generator such as magnetic density and static torque are analyzed. The generator proposed in this paper can adjust the wave capture capability according to the real-time size of the wave to achieve maximum power capture.