Fuzzy logic control for a small pitch controlled wind turbine

In this paper a control system for a pitch controlled variable speed wind turbine is described and analyzed. One of the main control system goals is to limit the aerodynamic power produced by the wind turbine to the nominal power in high wind speed region. In turbulent wind environment the power production control becomes difficult due to fluctuation of the wind speed. A fuzzy logic based control system was designed and investigated for a 60 kW mini wind turbine. A wind turbine aeroelastic model was developed in order to simulate the turbine behavior for different intensity of turbulent wind. Both the designed fuzzy logic control system and a classical PID control system were simulated and the results in terms of turbine rpm and power production were compared.