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논문 기본 정보

자료유형
학술저널
저자정보
Van-Tuan Doan (Soongsil University) Ki-Young Kim (Soongsil University) Woojin Choi (Soongsil University) Dae-Wook Kim (Soongsil University)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.17 No.1
발행연도
2017.1
수록면
181 - 189 (9page)

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초록· 키워드

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The three-phase four-leg voltage-source inverter topology is an interesting option for the three-phase four-wire system. With an additional leg, this topology can achieve superior performance under unbalanced and nonlinear load conditions. However, because of the low bandwidth of conventional controllers in high-power inverter applications, the system cannot guarantee a balanced output voltage under the unbalanced load condition. Most of the methods proposed to solve this problem mainly use the multiple synchronous frame method, which requires several controllers and a large amount of computation because of frame transformation. This study proposes a simple hybrid controller that combines proportional–integral (PI) and resonant controllers in the synchronous frame synchronized with the positive-sequence component of the output voltage of the three-phase four-leg inverter. The design procedure for the controller and the theoretical analysis are presented. The performance of the proposed method is verified by the experimental results and compared with that of the conventional PI controller.

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Abstract
I. INTRODUCTION
II. PROPOSED HYBRID CONTROLLER FOR THE THREE-PHASE FOUR-LEG INVERTER
III. DESIGN OF THE PROPOSED HYBRID CONTROLLER FOR THE THREE-PHASE FOUR-LEG INVERTER WITH UNBALANCE LOAD
IV. EXPERIMENTAL RESULTS
V. CONCLUSIONS
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UCI(KEPA) : I410-ECN-0101-2017-560-002047794