Research on a kind of direct-drive wave energy device

This paper describes a new kind of direct-drive wave turbine, which collects wave energy and part of tide through a specially designed turbine device. We select the appropriate wave theory (Elliptic Cosine wave theory), calculate the torque and power, the total energy of wave, energy conversion efficiency through characterization and stress analysis of the turbine blades. We could draw a conclusion that the device is a low number of revolutions of the turbine, which is suitable for the actual ocean wave gathering requirements. The article can provide practical guidance to optimize the design.