Design and Experiment of an Indirect Wave Power Generation Device using Magnetic Lead Screw

As a promising new transmission device, the magnetic lead screw (MLS) is considered to have a huge potential for wave energy conversion (WEC). The wave power generation device which using MLS can well transfer low-speed linear motion into high-speed rotation and offer much higher force density than that using traditional linear permanent magnet generator. The MLS has the advantages of inherent overload capability, high force density, no mechanical friction, and low maintenance. Therefore, in this paper, a wave power generation system consists of MLS and a permanent magnet synchronous generator (PMSG) is proposed. And a linear motor is used to simulate the sea wave. To verity the system, the prototype is manufactured and tested in the laboratory. In addition, the MLS performance is evaluated by using the finite- element analysis (FEA).