Abstract: The difference between the optimal torque and the actual torque of the wind turbine is used to increase the acceleration torque. Compared with the traditional optimal torque control method,this improved controller with the increasing acceleration torque（IAT）leads to higher capture efficiency of the wind energy. It also shows that the proposed method has better dynamic characteristics.Finally,by using FAST simulation software for wind turbines,the comparison simulation results demonstrate the capture efficiency of the wind energy under various wind conditions.