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결정질 태양전지의 Micro-crack 패턴에 따른 PV모듈의 전기적 특성에 관한 연구

A Study on the Electrical Characteristics of Photovoltaic Module Depending on Micro-Crack Patterns of Crystalline Silicon Solar Cell

  • 송영훈 (건국대학교 전기공학과) ;
  • 강기환 (한국에너지기술연구원 태양에너지연구단) ;
  • 유권종 (한국에너지기술연구원 태양에너지연구단) ;
  • 안형근 (건국대학교 전기공학과) ;
  • 한득영 (건국대학교 전기공학과)
  • 투고 : 2011.06.14
  • 심사 : 2011.12.19
  • 발행 : 2012.03.01

초록

This study investigated the process of thermal-induced growth of micro-crack developed at the crystalline solar cell using EL image, determined the output characteristic according to the pattern of micro-crack, analyzed the I-V characteristic according to the pattern of crack growth, and predicted the output value using simulation. The purpose of this study was, therefore, to investigate the process of thermal-induced growth of micro-crack developed at the early stage of PV module completion using EL image, to analyze the resulting decrement of output and predict the output value using simulation. It was observed that the crack grew increasingly by the thermal condition, and accordingly the lowering of output was accelerated. The output values of crack patterns with various direction were predicted using simulation, resulting in close I-V curve with only around 4% of error rate. It is considered that it is possible to predict the electric characteristic of solar cell module using only pattern of micro-crack occurred at solar cell based on our results.

키워드

참고문헌

  1. 송영훈, 강기환, 유권종, 안형근, 한득영 "PV모듈에서 온도 영향에 의한 micro-crack 성장과 전기적 특성 분석" 대한 전기 학회 하계학술대회 논문집 2011
  2. M. Kontges, I. Kunze, S. Kajari-Schroder, X. Breitenmoster, B. Bjorneklett "The risk of power loss in crystalline silicon based photovoltaic modules due to micro-cracks", Solar Materials & Solar cells, 2010
  3. C. Hilmersson, D.P. Hess, W. Dalls, S. Ostapenko,"Crack dection in single-crystalline silicon wafers using impact testing", SienceDirect, 2007
  4. 강기환 외, "태양전지모듈 제조를 위한 요소기술 기초 연구", 대한 전기 학회 하계학술대회 논문집, 2003
  5. 이재형, 임동건, 이준신, "태양전지 원론", 홍릉과학 출판사, 2005
  6. 한득영, "전자기학", 도서출판 인터비젼, 2000