Wind energy conversion systems using fuzzy sliding mode control

The paper describes a manner in which the energy-reliability optimization of wind energy conversion system´s operation can be achieved by means of the fuzzy sliding mode control. An appropriate sliding surface has been found in the speed-power plane, which allows the operation more or less close to the optimal regimes characteristic. What is more, by torque controlling the generator, an energy-reliability optimization of the wind turbine behavior is performed. The simulation results demonstrate that the proposed control method can not only maximize the wind energy capture ratio below the rated wind speed but can also make the system operate smoothly.