Journal of Power Electronics

  • 제10권5호
  • /
  • Pages.498-504
  • /
  • 2010
  • /
  • 1598-2092(pISSN)
  • /
  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
권호 표지
DOI QR코드

DOI QR Code

Robust Observer Design for an Isolated Power System with Model Uncertainty using H∞-Norm

  • Goya, Tomonori (Dept. of Electrical and Electronics Eng., Faculty of Eng., University of the Ryukyus) ;
  • Senjyu, Tomonobu (Dept. of Electrical and Electronics Eng., Faculty of Eng., University of the Ryukyus) ;
  • Omine, Eitaro (Dept. of Electrical and Electronics Eng., Faculty of Eng., University of the Ryukyus) ;
  • Yona, Atsushi (Dept. of Electrical and Electronics Eng., Faculty of Eng., University of the Ryukyus) ;
  • Urasaki, Naomitsu (Dept. of Electrical and Electronics Eng., Faculty of Eng., University of the Ryukyus) ;
  • Funabashi, Toshihisa (Meidensha Corporation)
  • 투고 : 2010.01.22
  • 발행 : 2010.09.20
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The output power fluctuations of renewable energy power plants such as wind turbine generators and photovoltaic systems result in frequency deviations and terminal voltage fluctuations. Furthermore, these power fluctuations also affect the turbine shaftings of diesel generators and gas-turbine generators which are the main power generation systems on isolated islands. Therefore, it is important to achieve torsional torque suppression. Since the measurement of torsional torque is technically difficult, and there is an uncertainty in the mechanical constants of the shaft torsional system. This paper presents an estimation system that estimates torsional torque by using a developed $H_{\infty}$ observer. In addition to the above functions, the proposed shaft torque observer incorporates a parameter identification system that aims to improve the estimation accuracy. The simulation results validate the effectiveness of the proposed $H_{\infty}$ observer and the parameter identification.

키워드

참고문헌

  1. John S. Joyce and Dietrich Lambrecht, " Status of evaluating the fatigue of large stem turbine-generators caused by electrical disturbances," IEEE Trans. Power Apparatus and Systems, vol. PAS-99, No. 1, pp. 111-119, Jan./Feb. 1996.
  2. T. Funabashi, H. Otoguro, G. Fujita, K. Koyanagi, and R. Yokoyama, "An influence of voltage sag duration on non-utility generator's shaft torque," in Proc. IEEE PES'00 Winter Meeting, pp. 153-158, 2000.
  3. T. Kakinoki, R. Yokoyama, G. Fujita, K. Koyanagi, and T Funabashi, "Evaluation technique of turbine shaft fatigue in private-generation systems using consumption rate of shaft life cycle," in Proc. IEEEPowerCon' 02 Conf., pp. 779-783, 2002.
  4. Chee-Mun Ong, Dynamic simulation of electric machinery: using Matlab/ Simulink, N.J.: Prentice Hall PTR, 1998.
  5. P. Kundur, Power system stability and control, New York: McGrawHill, 1994.
  6. S. Skogestad and I. Postlethwaite, Multivariable feedback control analysis and design, John Wiley and Sons Ltd., 1996.
  7. M. Chilali and P. Gahinet, "H1 design with pole placement constraints: an LMI approach," IEEE Trans. Automatic Control, Vol. 41, No. 3, pp. 358-367, Mar. 1996. https://doi.org/10.1109/9.486637
  8. C. Scherer, P. Gahinet, and M. Chilali, "Multiobjective output-feedback control via LMI optimization," IEEE Trans. Automatic Control, Vol. 42, No. 7, pp. 896-911, 1997. https://doi.org/10.1109/9.599969
  9. P. Gahinet, A. Nemirovski, A. J. Laub, and M. Chilali, LMI control toolbox for use with MATLAB, The Mathworks Inc., 2000.
  10. R. Y. Chiang and M. G. Safonov, Robust control toolbox for use with MATLAB, The Mathworks Inc., 1996.
  11. E. Omine, T. Senjyu, "Torsional torque suppression of decentralized generators based on $H_\infty$control theory," Proceedings of the 2006 Joint Conference of the IEEJ and IEICE, pp. 151-156, Dec. 2008.
  12. Zenta Iwai, Akira Inoue, Shigeyasu Kawazi, Observer, CORONA PUBLISHING CO., LTD., 1990.