June-Seok Lee, “누설 전류 저감을 고려한 3레벨 태양광 발전 시스템의 스위칭 방법,” 아주대학교 공학석사 학위 논문, 2012. > Paper

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Thesis June-Seok Lee, “누설 전류 저감을 고려한 3레벨 태양광 발전 시스템의 스위칭 방법,” 아주대학교 공학석사 학위 논문, 2012.

2012

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Transformerless photovoltaic (PV) systems are used because they have many advantages (weight, size, efficiency, etc.). However,

transformerless PV systems suffer from leakage current. The present paper proposes a modulation technique to reduce leakage

current in transformerless PV systems using a three-level inverter. The cause of the leakage current is analyzed. The proposed

technique uses large vectors, medium vectors and only one zero vector, and switching occurs once in a switching period. The

effectiveness of the proposed technique is verified by comparing its results with those of the space vector pulse width modulation

(SVM) method. The results are obtained through simulation and experiment.

 

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