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논문 기본 정보

자료유형
학술저널
저자정보
서정진 (Chungnam National University) 차한주 (Chungnam National University)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제70권 제11호
발행연도
2021.11
수록면
1,691 - 1,696 (6page)
DOI
10.5370/KIEE.2021.70.11.1691

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이 논문의 연구 히스토리 (2)

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Due to continuous environmental problems around the world and an increase in energy consumption, interest in solar power, wind power, and hydropower is increasing. Among them, photovoltaics is the most used in industries and homes because it is easy to repair and can be used for a long time. In photovoltaic PCS, parasitic capacitance is generated between the photovoltaic module and the ground due to the installation structure of the photovoltaic module. This parasitic capacitance, VCM, which is a common mode voltage generated by switching of PCS, is applied to CP, and leakage current occurs. In this paper, the common mode voltage characteristics at three-phase three-level, and three-phase two-level were compared. Proposed an equivalent circuit that was equalized from unaffected by grid impedance the point of view of the common-mode by dividing it into a transformerless type PCS connected to the grid ground and a transformer type PCS applying a transformer. The validity of the proposed equivalent circuit was verified by constructing a three-phase three-level PCS and comparing the equivalent circuit using the experiment measurements and PSIM. In the transformerless PCS, the leakage current is equivalent to 1.13A in the equivalent circuit and 1.14A in the experiment. In the transformer type PCS, the equivalent circuit is 68mA and the experiment 70mA. In addition, for the validity of the proposed equivalent circuit, FFT analysis of leakage current, which is the switching frequency, was performed.

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Abstract
1. 서론
2. PCS 시스템 구조 및 등가회로 제안
3. 변압기 유무에 따른 PCS
4. 시뮬레이션 결과
5. 실험 결과
6. 결론
References

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