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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2019.5
- 수록면
- 2,586 - 2,591 (6page)
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초록· 키워드
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The three-phase grid-connected converter control system and the grid impedance are coupled with each other under weak grid conditions, which brings in negative influence on the system. In this paper, the impedance model of a three-phase grid-connected converter including current loop, PLL and DC voltage loop is established in d-q frame. The influence of PLL and DC voltage loop proportional coefficient on system stability is analyzed. According to the transfer relationship of each variable in the impedance model, the PCC voltage perturbation paths to the PLL and DC voltage loop are analyzed respectively. On the basis of voltage perturbation paths, a compensation control strategy is proposed. The impedance analysis results show that the proposed method can effectively improve the system stability under weak. The experimental results verify the correctness of the theoretical analysis and the effectiveness of the proposed method.
목차
Abstract
I. INTRODUCTION
II. IMPEDANCE MODELING OF THREE-PHASE GRIDCONNECTED CONVERTER
III. IMPROVED CONTROL METHOD OF VOLTAGE PERTURBATION COMPENSATION
IV. EXPERIMENTAL VERIFICATION
V. CONCLUSIONS
REFERENCES
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