Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
권호 표지
DOI QR코드

DOI QR Code

A Fuzzy PI Controller for Pitch Control of Wind Turbine

풍력 발전기 피치 제어를 위한 퍼지 PI 제어기

  • Cheon, Jongmin (Korea Electrotechnology Research Institute (KERI)) ;
  • Kim, Jinwook (Korea Electrotechnology Research Institute (KERI)) ;
  • Kim, Hongju (Korea Electrotechnology Research Institute (KERI)) ;
  • Choi, Youngkiu (Dept. of Electrical Engineering, Pusan National University) ;
  • Jin, Maolin (Korea Institute of Robot and Convergence (KIRO))
  • Received : 2017.11.04
  • Accepted : 2018.02.20
  • Published : 2018.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

When the wind speed rises above the rated wind speed, the produced power of the wind turbines exceeds the rated power. Even more, the excessive power results in the undesirable mechanical load and fatigue. A solution to this problem is pitch control of the wind turbines. This paper presents a systematic design method of a collective pitch controller for the wind turbines using a discrete fuzzy Proportional-Integral (PI) controller. Unlike conventional PI controllers, the fuzzy PI controller has variable gains according to its input variables. Generally, tuning the parameters of fuzzy PI controller is complex due to the presence of too many parameters strongly coupled. In this paper, a systematic method for the fuzzy PI controller is presented. First, we show the fact that the fuzzy PI controller is a superset of the PI controller in the discrete-time domain and the initial parameters of the fuzzy PI controller is selected by using this relationship. Second, for simplicity of the design, we use only four rules to construct nonlinear fuzzy control surface. The tuning parameters of the proposed fuzzy PI controller are also obtained by the aforementioned relationship between the PI controller and the fuzzy PI controller. As a result, unlike the PI controller, the proposed fuzzy PI controller has variable gains which allow the pitch control system to operate in broader operating regions. The effectiveness of the proposed controller is verified with computer simulations using FAST, a NREL's primary computer-aided engineering tool for horizontal axis wind turbines.

Keywords

References

  1. T. Senjyu, R. Sakamoto, N. Urasaki, T. Funabashi, H. Fujita, and H. Sekine, "Output Power Leveling of Wind Turbine Generator for All Operating Regions by Pitch Angle Control," IEEE Trans. on Energy Conversion, vol. 21, no. 2, pp. 467-475, June 2006. https://doi.org/10.1109/TEC.2006.874253
  2. S. Y. Kim, and S. H. Kim, "A Design for a Fuzzy Logic based Frequency Controller for Efficient wind Farm Operation," Journal of Institute of Control, Robotics and Systems, vol. 20, no. 2, pp. 186-192, February 2014. https://doi.org/10.5302/J.ICROS.2014.13.8003
  3. D. Lee, H. C. Sung, and Y. H. Joo, "Fuzzy Modeling and Robust Stability Analysis of Wind Farm based on Prediction Model for Wind Speed," Journal of Institute of Control, Robotics and Systems, vol. 20, no. 1, pp. 22-28, January 2014. https://doi.org/10.5302/J.ICROS.2014.13.1958
  4. H. C. Sung, M. H. Tka, and Y. H. Joo, "Robust Fuzzy Controller for Mitigating the Fluctuation of Wind Power Generator in Wind Farm," Journal of Institute of Control, Robotics and Systems, vol. 19, no. 1, pp. 34-39, January 2013. https://doi.org/10.5302/J.ICROS.2013.19.1.034
  5. 남윤수, 윤태준, 박종식, "풍력 터빈의 피치 제어," 2008년 제어자동화시스템 심포지엄, pp. 41-44, 2008년 10월.
  6. 김병문, 육의수, 김성호, 풍력발전 시스템을 위한 퍼지로직 기반의 피치제어기 설계, 2011년도 제어 로봇 시스템학회 전북제주지부 학술대회 논문집, pp. 90-94, 2011년7월.
  7. J. Cheon and S. Kwon and Y. Choi, "Design of a pitch controller using disturbance accommodating control for wind turbines under stochastic environments," 2014 IEEE 23rd International Symposium on Industrial Electronics, pp. 2572-2577, June 2014.
  8. B. Boukhezzar, L. Lupu, H. Siguerdidjane, and M. Hand, "Multivariable control strategy for variable speed, variable pitch wind turbines," Renewable Energy, vol. 32, no. 8, pp. 1273-1287, July 2007. https://doi.org/10.1016/j.renene.2006.06.010
  9. F.D. Bianchi, H.D. Battista and R.J. Mantz, Wind Turbine Control Systems, Principles, Modeling and Gain Scheduling Design, Springer-Verlag London Limited, 2007.
  10. K. Selvan, Individual Pitch Control for Large Scale Wind Turbines, Multivariable control approach, ECN-E07-053, 2007.
  11. J. Jonkman, S. Butterfield, W. Musial and G. Scott, Definition of a 5-MW Reference Wind Turbine for Offshore System Development, NREL/TP-500-38060, 2009.
  12. M.H. Hansen, A. Hansen, T.J. Larsen, S. Oye, P. Sorensen, P. Fuglsang, Control Design for a Pitch-regulated Variable-speed Wind Turbine, Report Riso-R-1500(EN) Riso National Laboratory, Roskilde, Denmark, 2005.
  13. A. D. Wright and L. J. Fingersh, Advanced Control Design for Wind Turbines Part I: Control Design, Implementation, and Initial Tests, NREL Report No. TP-500-42437, National Renewable Energy, 2008.
  14. J. Kim, J. Cheon, J. Lee, and M. Jin, "Design of pitch controller for wind turbines using time-delay estimation," 2015 IEEE International Conference on Automation Science and Engineering, pp. 113 -1136, August 2015.
  15. H. Ying, Fuzzy Control and Modeling: Analytical Foundations and Applications, IEEE Press, New York, 2000.
  16. O.K. Choi, J. Kim, J. Kim and J. Lee, "BIBO stability analysis of TSK fuzzy PI/PD control systems," Intelligent Automation and Soft Computing, vol. 21, no. 4, pp. 645-658, Feb 2015. https://doi.org/10.1080/10798587.2015.1015243
  17. K.M. Passino, and S. Yurkovich, Fuzzy Control, Addison-Wesley, 1998.