Abstract
Wind turbines require continuous monitoring and control in order to maintain constant power output when the speed of wind changes. Controlling a non-linear model of the wind turbine requires a robust controller that can adjust to the changes in the environment as well as operational conditions. Proportional-Integral (PI) controllers can not cope effectively in cases of sudden change in wind speed or transient operation. For this reason, advanced control schemes have been proposed to mitigate the effects of system disturbance. This paper presents detailed modelling, simulation and analysis of a novel Fuzzy Logic Control (FLC) scheme for variable speed wind turbines using a permanent magnet synchronous generators. The machine side controller is designed to match maximum power extraction from wind with converted power to the DC link side. Detailed strategies for PI control and FLC have been discussed and compared. Simulations for different wind speed profiles are also presented in the paper.
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