On December 19, 2019, the master’s student, Gabriel Linhares Baldo, presented his dissertation in Florianópolis, SC. The title’s dissertaion is Project and Comparative Analysis of Hydraulic Solutions for Power Control, Yaw and Step in Wind Turbines. The author have presented the results through simulations for real wind conditions which proves the functionality of the complete hydraulic solution for the proposed wind turbine. The main objective of the dissertation was to design an integrated hydraulic solution for wind turbines that includes blade and nacelle angle control, as well as the hydrostatic transmission between rotor and generator. In addition to the hydraulic circuit design, the work involves feasibility analysis considering the use of components available on the market. Therefore, a complete hydraulic solution was modeled, involving the three actions (transmission, yaw and pitch) with an adequately control of the power generated, rotor speed and the performance of pitch and yaw angles was implemented. The results indicate an stable operation with a real wind situation for all regions of operation, obtaining a maximum energy efficiency of 85%. The proposed concept has the potential to reduce the mass supported by the tower and the maintenance procedures.
