Modeling and Simulation of Point Absorber Wave Energy Converter

In this paper, mathematical modeling of point absorber wave energy converter system is proposed. The overall concept of a system is to convert wave energy into the electrical energy by mathematical model. The modeling is simulated by considering the waves produced in the ocean which are varying continuously. The sphere shaped buoy is a partially submerged placed in the ocean surface, allowed to oscillate in heave mode only. In this system two regular waves super-positioned to form an irregular wave. This irregular wave decides the hydrodynamics of buoy. The hydrodynamics force includes excitation force, viscous force, hydrostatic force and radiation force. For power-take-off mechanism, the hydraulic piston pump is introduced and it will convert wave energy into hydraulic energy. By using electro-mechanical converter, the hydraulic energy is converted into electrical energy. It consists of a hydraulic motor coupled with the generator. The hydraulic motor rotates the generator, which generates power.