Modeling and Analyze of an Energy Recovery System (ERS) to Transform of Sea Waves Kinetic Energy into Electrical Energy

In order to transform the mechanical energy into the electrical one rotary electric generators are the principal electromechanical devices which are used, but in some particular cases linear generators are more indicated for this task. Linear machines have significant advantages, such as simplicity of construction and a high efficiency compared to rotary machines. To achieve high efficiency, permanent magnet (PM) tubular topologies are particularly interesting among the different types of linear machines. Also, tubular linear machines have an advantage over flat linear machines because they produce high thrust due to the absence of normal forces. This work presents the magneto-hydrodynamic modeling of a sea wave energy converter. The devise is named Energy Recovery System (ERS). The magnetic field in the generator is calculated by means of finite element method and the set of mechanical equations is solved numerically on Matlab. The results are mainly the speed, the displacement and the distribution of the magnetic induction as well as the induced electromotive force.