LCL 입력 필터를 갖는 PWM 컨버터의 궤환 선형화 제어

Feedback Linearization Control of PWM Converters with LCL Input Filters

  • 발행 : 2008.02.20

초록

본 논문에서는 댐핑저항을 사용하지 않고 LCL필터를 사용한 AC/DC PWM 컨버터를 제어하기 위해 다중 루프구조를 갖는 궤환선형화 제어기법을 제안한다. 궤환선형화 기법은 시스템의 비선형성을 제거하여 선형적으로 제어기를 설계할 수 있는 방법으로 우수한 동특성을 얻을 수 있다. 궤환선형화와 더불어 다중루프를 적용하여 컨버터입력전류를 제한함으로써 컨버터의 과전류를 방지할 수 있다. 사용되는 센서의 개수를 줄이기 위해 전원전압과 전원전류가 추정된다. 제시된 제어 알고리즘은 시뮬레이션 및 실험을 통해 그 타당성이 검증된다.

This paper proposes a feedback linearization control scheme of AC/DC PWM converters with LCL input filters using no damping resisters. This feedback linearization scheme can eliminate the non-linearity of the system. So, the controller of the system can be designed by using linear control theory, which gives a good transient response. The cascade structure of the controller makes the converter current be controlled within a certain limit. To reduce the number of sensors, the source voltage and current is estimated. The validity of the proposed control algorithm is verified by simulation and experimental results.

키워드

참고문헌

  1. Jae-Seok. Noh, Jaeho. Choi, '교류 입력측 LCL 필터 구조 전압형 PWM 컨버티의 설계', 전력전자학회 논문지 제7권 제5호, pp. 490-498, 2002
  2. M. Liserre, A. Dell'Aquila, and F. Blaabjerg, 'Stability improvements of an LCL-filter based three-phase active rectifier', IEEE PESC. proc., Vol. 3, pp. 1195-1201, 2002, June
  3. M. Liserre, A. Dell'Aquila, and F. Blaabjerg, 'Genetic algorithm-based design of the active damping for an LCL-filter three-phase active rectifier', IEEE Trans. Power Electron, Vol. 19, No. 1, pp.76-86, 2004, Jan https://doi.org/10.1109/TPEL.2003.820540
  4. Twining. Erika, and D.G. Holmes, 'Grid current regulation of a three-phase voltage source inverter with an LCL input filter', IEEE Trans. Power Electron., Vol. 18. No. 3, pp. 888-895, 2003, May https://doi.org/10.1109/TPEL.2003.810838
  5. R. Teodorescu, F. Blaabjerg, M. Liserre, and A. Dell'Aquila, 'A stable three-phase LCL-filter based active rectifier without damping', IEEE IAS Conf. proc., Vol. 3, pp. 1552-1557, 2003, Oct.
  6. Tzann-Shin. Lee, 'Input-output linearization and zero-dynamics control of three-phase AC/DC voltage-source converters', IEEE Trans. Power Electrons, Vol. 18, No.1, pp.11-22, 2003, Jan. https://doi.org/10.1109/TPEL.2002.807145
  7. L. Yacoubi, K. Al-Haddad, L.-A. Dessaint, and F. Fnaiech, 'Linear and nonlinear control techniques for a three-phase three-level NPC boost rectifier,' IEEE Trans. Ind. Electr., Vol. 53, No. 6, pp.1908-1918, 2006, Dec https://doi.org/10.1109/TIE.2006.881990
  8. J. E. Slotine and W. Li, 'Applied nonlinear control', Prentice Hall, pp.207-271, 1991
  9. M. M. Seron, S. F. Graebe, and G. C. Goodwin, 'All stabilizing controllers, feedback linearization and anti-windup: a unified review,' in American Control Conference, pp.1685-1689, 1994
  10. S. Derksen, and D. Reefman, 'Load current estimation for control algorithms in buck converter', Power Electron and Appl, 2005 European Conference, pp.1-10, 2005, Sept
  11. M. Liserre, F. Blaabjerg, and S. Hansen, 'Design and control of an LCL-filter-based three-phase active rectifier', IEEE Trans. Ind. Appl., Vol. 41, No. 5, pp. 1281-1291, 2005, Sept.-Oct https://doi.org/10.1109/TIA.2005.853373