Current Photovoltaic Research

Korea Photovoltaic Society (한국태양광발전학회)
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Solar Cell Design for Large Area Multi Busbar Module Power Loss Reduction

대면적 Multi busbar 모듈 전력 손실 저감을 위한 태양전지 설계

  • Juhwi Kim (Department of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Jaehyeong Lee (Department of Electrical and Computer Engineering, Sungkyunkwan University)
  • 김주휘 (전자전기컴퓨터공학과, 성균관대학교) ;
  • 이재형 (전자전기컴퓨터공학과, 성균관대학교)
  • Received : 2023.02.24
  • Accepted : 2023.03.16
  • Published : 2023.03.31
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Abstract

Solar energy had become the main energy industry of renewable energy along with hydroelectric power generation. One of the technologies that contributed to the popularization of photovoltaic power and the decrease in the unit price of photovoltaic modules was the large-area solar cell. However, as the area increased, the light receiving area increased and the current value increased accordingly. Since power loss occurs when the current value was large, the number of busbar was increased to increase the current collection rate, and a technology to lower the current value through half-cutting was developed. The bus bar of the solar cell served as a passage through which the generated current was transmitted. This was because when the number of busbar decreases, the moving distance of electrons increased, so the amount of power generation decreases and when it increases, shadows occured. An important aspect of the electrode design was the optimal balance of these busbars and number of fingers. Therefore, in this study, the characteristics of the solar cell according to the number of front bus bars of the large-area solar cell were simulated using Griddler 2,5 pro. After selecting the number of busbar with the best characteristics, the difference was compared by varying the number of fingers and a better direction for the number of cutting was presented.

Keywords

Acknowledgement

본 연구는 정부(산업통상자원부)의 재원으로 한국에너지기 술평가원의 지원을 받아 수행된 연구임(No.20213030010430, 양면형 모듈 경쟁력 강화를 위한 핵심 기술개발).

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