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Facing the growing necessity in increasing the electrical energy offer due to the constant rise in worldwide demand, this work evaluates the performance of an ocean wave energy converter into electrical energy. The system under analysis is an oscillating water column with dual action turbine installed in a shore. A regular wave model is used as disturbance to the semi-submerged air chamber dynamic generating an air flow through the dual action air turbine. The final system is nonlinear and contains time varying parameters. This work investigates, through numerical simulation, possibilities to increase the turbine efficiency under different ocean conditions. After the physical and mathematical modeling, it is synthesized a proportional derivative controller to control the air pressure in the turbine around its ideal working pressure. The analysis of results includes a comparison between results obtained for the system with and without controller and a robustness evaluation with amplitude variation in ocean waves. The work also presents optimization proposals for the system working in conditions similar to the Pecém region in Brazil. By the results obtained with simulation, it is concluded that the efficiency and robustness were improved for the controlled system. It is observed that the efficiency can be optimized for the installation area.

Modelagem e análise de desempenho de sistema para geração de energia elétrica através de ondas marítimas.