Wind energy hides a huge potential, and in terms of the utilization of renewable energy sources currently occupies a leading position. Development of technologies for the exploitation of this kind of energy is in a large increase. Plants that utilize wind energy are called wind turbines. With the increase of the wind turbine power, its dimensions and structural loads also grow. Also, it is important to mention that wind turbines can extract only a part of the available wind energy. Therefore, it is extremely important to use quality control systems to optimize energy conversion. In this paper was first conducted a synthesis of control systems with feedback, which use feedback to generate a control signal. The most important part of the control system is a PI controller that generates a reference value which is forwarded to the actuator. Since the requirements for the regulation of wind turbines vary depending on the area of its operation, the control system integrates controllers designed for each area individually: below the rated wind speed, the borders of the region below the nominal wind speed, above the rated wind speed. In order to achieve a better response of the system with respect to changes in wind speed, the closed-loop control algorithm is extended with feedforward branch. All the resulting functions and controllers were tested on the linearized model of a wind turbine, subjected to a turbulent wind, in the Matlab Simulink environment and then in the FAST simulation package. Results show improved behavior of the control system with the feedforward branch in compensation of disorders, respectively reducing the ampitudes of oscillations of the output values.