Abstract：A nonlinear control method based on the sliding mode theory is presented for the doubly fed wind power generation system. The difference between the speed and the optimal speed of the wind turbine is selected as the sliding mode controller. In addition, the control system adopts the vector control technology of stator flux orientation, and realizes the decoupling control of active power and reactive power. Finally, according to the wind turbine optimal power curve, doubly fed wind power generation system of 6kW for maximum wind power tracking control is studied. Simulation results show that the under the given stochastic wind speed, wind turbine remained optimal tip speed ratio and the maximum wind energy utilization coefficient, achieving the maximum output power and maximum power point tracking control, reducing the mechanical load.
2016, Vol. 17 
