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
- 2011.7
- 수록면
- 599 - 605 (7page)
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초록· 키워드
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This paper proposes a gain scheduling method that improves the stability of grid-connected systems employing an LCL-filter. The method adjusts the current controller gain through an estimation of the grid impedance in order to reduce the resonance that occurs when using an LCL-filter to reduce switching harmonics. An LCL-filter typically has a frequency spectrum with a resonance peak. A change of the grid-impedance results in a change to the resonant frequency. Therefore an LCL-filter needs a damping method that is applicable when changing the grid impedance for stable system control. The proposed method instantaneously estimates the grid impedance and observes the resonant frequency at the same time. Consequently, the proposed method adjusts the current controller gain using a gain scheduling method in order to guarantee current controller stability when a change in the resonant frequency occurs. The effectiveness of the proposed method has been verified by simulations and experimental results.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. THE LCL-FILTER
Ⅲ. THE PROPOSED GAIN SCHEDULING METHOD
Ⅴ. EXPERIMENTAL RESULTS
Ⅵ. CONCLUSION
ACKNOWLEDGMENT
REFERENCES
참고문헌 (17)
참고문헌 신청
F. Blaabjerg / 2004 / Power electronics as efficient interface in dispersed power generation systems / IEEE Trans. Power Electron 19(5):1184~1194
김재형 / 2010 / Power Loss Analysis of Interleaved Soft Switching Boost Converter for Single-Phase PV-PCS / 전력전자학회 영문논문지 10(4):335~341
박기우 / 2010 / Hardware Simulator Development for a 3-Parallel Grid-Connected PMSG Wind Power System / 전력전자학회 영문논문지 10(5):555~562
IEEE Standard 929-2000 : IEEE Recommended practice for utility interface of photovoltaic (PV) systems
IEEE Standard 1547-2003 : IEEE Standard for interconnecting distributed resources with electric power systems
김재형 / 2010 / Power Loss Analysis of Interleaved Soft Switching Boost Converter for Single-Phase PV-PCS / 전력전자학회 영문논문지 10(4):335~341
박기우 / 2010 / Hardware Simulator Development for a 3-Parallel Grid-Connected PMSG Wind Power System / 전력전자학회 영문논문지 10(5):555~562
IEEE Standard 929-2000 : IEEE Recommended practice for utility interface of photovoltaic (PV) systems
IEEE Standard 1547-2003 : IEEE Standard for interconnecting distributed resources with electric power systems
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UCI(KEPA) : I410-ECN-0101-2013-560-000410026