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논문 기본 정보

자료유형
학술저널
저자정보
Chen Chen (Huazhong University of Science and Technology) Jian Xiong (Huazhong University of Science and Technology) Kai Zhang (Huazhong University of Science and Technology)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.17 No.4
발행연도
2017.7
수록면
1,058 - 1,070 (13page)

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초록· 키워드

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This paper proposes a novel active damping scheme to suppress LCL-filter resonance with only grid-current feedback control in grid-connected voltage-source converters. The idea comes from the concept of the model reference adaptive control (MRAC). A detailed theoretical derivation is given, and the effectiveness of this method is explained based on its physical nature. According to the control structure of this method, the active damping compensator, which is essentially a second order resonant integrator (SORI) filter, provides an effective solution to damp LCL resonance and to eliminate the need for additional sensors. Compared with extra feedback methods, the cost and complexity are reduced. A straightforward tuning procedure for the active damping method has been presented. A stability analysis is illustrated in the discrete domain while considering a one-step delay. Finally, experimental results are presented to validate the analysis and to demonstrate the good performance of the proposed method.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. MODELING AND STABILITY ANALYSIS OF THE SINGLE GRID CURRENT CONTROL LCL-TYPE GRID-CONNECTED CONVERTER
Ⅲ. PROPOSED ACTIVE DAMPING SCHEME BASED ON A SORI FILTER
Ⅳ. SYSTEMATIC DESIGN OF THE GRID CURRENT CONTROL LOOP
Ⅴ. EXPERIMENTAL RESULTS
Ⅵ. CONCLUSION
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UCI(KEPA) : I410-ECN-0101-2018-560-001033843