Análise de um sistema eólico com controle híbrido PI+LQI diante de distorções harmônicas e afundamento de tensão

Abstract

Faced with the brasilian energy dependence problem, the renewable energy have become an attractive solution, with a highlight for wind energy. It is a renewable source with great participation in the electric power system connection your connection still needs to go through several studies to test its performance as diversity. In this paper, we conducted a simplified testing of a wind power generation system with the presence of voltage harmonic distortion in the power grid. Furthermore, it is also checked on the system response to a small voltage dip. The tests are performed in order to test the quality of two control techniques simultaneously. It is applied a hybrid control PI + LQI type where PI control is used in the external loops controlling the active power and reactive and LQI control is used on the inner loops controlling the rotor currents. Also added is a resounding block in the PI control to order to observe the behavior of variables. The simulations are performed on PSCAD software in which has to be a reliable program in studies of electric power systems.