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논문 기본 정보

자료유형
학술저널
저자정보
Kyungbae Lim (Chungbuk National University) Injong Song (Chungbuk National University) Jaeho Choi (Chungbuk National University) Hyeong-Jun Yoo (Incheon National University) Hak-Man Kim (Incheon National University)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.19 No.1
발행연도
2019.1
수록면
254 - 264 (11page)

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초록· 키워드

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This paper proposes an indirect current control technique based on a proportional resonant (PR) approach for the seamless mode transfer of utility interactive inverters. Direct-current and voltage hybrid control methods have been used for inverter control under grid-connected and islanded modes. A large bandwidth can be selected due to the structure of single-loop control. However, this results in poor dynamic transients due to sudden changes of the controller during mode changes. Therefore, inverter control based on indirect current is proposed to improve the dynamic transients by consistently controlling the output voltage under all of the operation modes. A PR-based indirect current control topology is used in this study to maintain the load voltage quality under all of the modes. The design processes of the PR-based triple loop are analyzed in detail while considering the system stability and dynamic transients. The mode transfer techniques are described in detail for both sudden unintentional islanding and islanded mode voltage quality improvements. In addition, they are described using the proposed indirect control structure. The proposed method is verified by the PSiM simulations and laboratory-scale VDER-HILS experiments.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. CONTROLLER DESIGN
Ⅲ. PROPOSED MODE TRANSFER METHOD BASED ON INDIRECT CURRENT CONTROL
Ⅳ. SIMULATION RESULTS
Ⅴ. EXPERIMENTAL RESULTS
Ⅵ. CONCLUSIONS
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