지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2008.1
- 수록면
- 10 - 22 (13page)
이용수
초록· 키워드
오류제보하기
The wind-driven doubly fed induction generator (DFIG) is currently under pressure to be more grid-compatible. The main concern is the fault ride-through (FRT) requirement to keep the generator connected to the grid during faults. In response to this, the paper introduces a novel model and new control scheme for the DFIG. The model provides a means of direct stator power control and considers the stator transients. On the basis of the derived model, a robust linear quadratic (LQ) controller is synthesized. The control law has proportional and integral actions and takes account of one sample delay in the input owing to the microprocessor’s execution time. Further, the influence of the grid voltage imperfection is mitigated using frequency shaped cost functional method. Compensation of the rotor current pulsations is proposed to improve the FRT capability as well as the generator performance under grid voltage unbalance. As a consequence, the control system can achieve ⅰ) fast direct power control without instability risk, ⅱ) alleviation of the problems associated with the DFIG operation under unbalanced grid voltage, and iii) high probability of successful grid FRT. The effectiveness of the proposed solution is confirmed through simulation studies on 2MW DFIG.
목차
ABSTRACT
1. Introduction
2. Stator Power Model
3. DFIG under Grid Faults
4. Proposed LQ Control
5. Disturbance Rejection Control Objectives
6. System Evaluation
7. Conclusion
Appendix
References
참고문헌 (25)
참고문헌 신청
1. [학술지(정기간행물)] - L. Gertmar / 2007 / Wind energy powers-That-Be successor generation in globalization / IEEE Trans. On Energy Conversion 22 (1) : 13 ~ 28
2. [단행본] - American Wind Energy Association / 2005 / "AWEA electrical guide to utility scale wind turbines,"
3. [학술지(정기간행물)] - R. Datta / 2002 / Variable speed wind generation using doubly fed wound rotor induction machine: a comparison with alternative scheme / IEEE Trans. On Energy Conversion 17 (3) : 414 ~ 421
4. [학술지(정기간행물)] - S. Muller / 2002 / "Doubly fed induction generator systems for wind turbines," / IEEE Ind. Appl. Mag 8 (3) : 26 ~ 33
5. [학위논문] - A. Peterson / 2005 / “Analysis, modeling and control of doubly fed induction generators for wind turbines,” / Ph. D / Chalmers Univ. of Technology
2. [단행본] - American Wind Energy Association / 2005 / "AWEA electrical guide to utility scale wind turbines,"
3. [학술지(정기간행물)] - R. Datta / 2002 / Variable speed wind generation using doubly fed wound rotor induction machine: a comparison with alternative scheme / IEEE Trans. On Energy Conversion 17 (3) : 414 ~ 421
4. [학술지(정기간행물)] - S. Muller / 2002 / "Doubly fed induction generator systems for wind turbines," / IEEE Ind. Appl. Mag 8 (3) : 26 ~ 33
5. [학위논문] - A. Peterson / 2005 / “Analysis, modeling and control of doubly fed induction generators for wind turbines,” / Ph. D / Chalmers Univ. of Technology
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