The proposed control scheme is based on gain-scheduled reinforcement learning recurrent ANFIS type 2 (GS-RL-RANFIST2) pitch angle controller to maintain the rotor speed at its rated value while smoothing the output power and the performance of the pitch angle system. The practical application of...
Pitch angle controller gain [Kp Ki]— Proportional and Integral gains of pitch controller [5 25] (default) Proportional and Integral gains Kp and Ki of the pitch controller. Specify Kp in degrees/(power deviation pu) and Ki in degrees/(power deviation pu)/s. The power deviation is the di...
The nonlinear dynamics of wind power plants, in addition to uncertainties such as unknown nonlinear disturbances and parameter variations make the design of a robust controller a difficult task. This paper proposes a robust fractional-order controller for the pitch angle control of a variable-speed ...
Furthermore, the performance of the TLBO tuned FONPID pitch angle controller is compared with the performance of TLBO tuned gain﹕cheduled PID (GSPID), fractional﹐rder PID (FOPID), and nonlinear PID (NPID) based pitch angle controllers....
Its control performance is finally compared with robust controller performance that is designed in previous section. The standard formula of this system is as follows [27]: Kp(1+1Tis+Tds) (35) where Kp, Ti and Td are the proportional gain, the integral and derivative time constants, ...
Due to the non-linear relationship between the pitch angle and the wind speed, the traditional PI controller is not ideal for control above the rated wind speed. Therefore, the currently used PI controller generally incorporates gain scheduling technology. A wind turbine pitch controller based on ...
Pitch control based on nonlinear PI or PD controller. 3.3. Nonlinear Gain Table Obviously, all of the wind speed , rotor speed of wind turbine , and pitch angle can have effect on the nonlinear gain a by Equation (20). But, the sensitivity of the system to the pitch angle is far grea...
In Section 3, the L1 adaptive pitch angle controller is designed. Section 4 describes the stability of the closed-loop system. In Section 5, verification results on a 1.5 MW wind turbine are demonstrated. Section 6 concludes this paper.
In medium to large scale wind energy conversion systems (WECS), the control of the pitch angle of the blades is an usual method for power regulation above rated wind speed. However, limitations of the pitch actuator have a marked influence on the regulation performance. In variable-speed mode...
A method of controlling blade pitch angle, including comparing demanded and measured blade pitch angle and calculating any difference therebetween, in a primary electrical control s