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논문 기본 정보

자료유형
학술저널
저자정보
Byung-Keun Yoon (Kyung-pook National University) Chul Yun (Kyung-pook National University) Nae-Soo Cho (Keimyung College University) Sang-Back Choi (Digital Korea) Yong-Su Jin (Digital Korea) Woo-Hyen Kwon (Kyungpook National University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.13 No.2
발행연도
2018.3
수록면
769 - 780 (12page)

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This paper presents an analysis of the power gain under partial shading conditions (PSC) when the partial shade loss is being compensated in photovoltaic(PV) system. To analyze the power gain, our study divides the mismatch loss into partial shade loss and operating point loss. Partial shade loss is defined as the power difference between a normal string and a partially shaded string at the maximum power point (MPP). Operating point loss is defined as the power loss due to the operating point shift while following the MPP of the PV array. Partial shading in a PV system affects the maximum power point tracking (MPPT) control by creating multiple MPPs, which causes mismatch losses. Several MPPT algorithms have been suggested to solve the multiple MPP problems. Among these, mismatch compensation algorithms require additional power to compensate for the mismatch loss; however, these algorithms do not consider the gain or loss between the input power required for compensation and the increased output power obtained after compensation. This paper analyzes the power gain resulting from the partial shade loss compensation under PSC, using the V–P curve of the PV system, and verifies that power gain existence by simulation and experiment.

목차

Abstract
1. Introduction
2. Partial Shade Effect in PV String
3. Review of Conventional Partial Shade Compensation Algorithms
4. Analysis of Power Gain through Partial Shade Compensation
5. Conclusion
References

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