PIDD2 Control of Large Wind Turbines’ Pitch Angle

• Published in: Energies (Basel) Vol. 16; no. 13; p. 5096
• Main Authors: Hu, Xingqi, Tan, Wen, Hou, Guolian
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.07.2023
• Subjects: Air-turbines; Alternative energy sources; Analysis; Buildings and facilities; Control methods; Control systems; Controllers; Design; internal model control; Noise measurement; Pitch (inclination); pitch angle control; Process controls; Process parameters; Simulation methods; state-space PIDD2; Step response; time delay; Timing; Turbines; Wind power; wind turbine systems
• ISSN: 1996-1073; 1996-1073
• DOI: 10.3390/en16135096

The pitch control system has a profound impact on the development of wind energy, and yet a delay or non-minimum phase can weaken its performance. Thus, there is a strong incentive to enhance pitch control technology in order to counteract the negative effects of unidentified delays and non-minimum phase characteristics. To reduce the complexity of the parameter-tuning process and improve the performance of the system, in this paper, we propose a novel control method for wind turbine pitch angle with time delays. Specifically, the proposed control method is state-space PIDD2, which is based on internal model control (IMC) and the open-loop system step response. Then, considering the tracking, disturbance rejection and measurement noise, the proposed controller is verified through simulations. The simulation results demonstrate that the state-space PIDD2 (SS-PIDD2) can provide a trade-off between robustness, time domain performance and measurement noise attenuation and effectively improve pitch control performance in contrast to series PID and PI control methods.